CN1310246C - Recording medium - Google Patents

Recording medium Download PDF

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Publication number
CN1310246C
CN1310246C CNB031474829A CN03147482A CN1310246C CN 1310246 C CN1310246 C CN 1310246C CN B031474829 A CNB031474829 A CN B031474829A CN 03147482 A CN03147482 A CN 03147482A CN 1310246 C CN1310246 C CN 1310246C
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China
Prior art keywords
data
audio message
area territory
digitized audio
record area
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Expired - Fee Related
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CNB031474829A
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Chinese (zh)
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CN1495778A (en
Inventor
横田哲平
西尾文孝
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Sony Corp
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Sony Corp
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Publication of CN1495778A publication Critical patent/CN1495778A/en
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Publication of CN1310246C publication Critical patent/CN1310246C/en
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/0079—Zoned data area, e.g. having different data structures or formats for the user data within data layer, Zone Constant Linear Velocity [ZCLV], Zone Constant Angular Velocity [ZCAV], carriers with RAM and ROM areas
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
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    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
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    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1252—Formatting, e.g. arrangement of data block or words on the record carriers on discs for discontinuous data, e.g. digital information signals, computer programme data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
    • G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
    • G11B27/3063—Subcodes
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    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1251—Formatting, e.g. arrangement of data block or words on the record carriers on discs for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10592—Audio or video recording specifically adapted for recording or reproducing multichannel signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B2020/1087—Digital recording or reproducing wherein a selection is made among at least two alternative ways of processing
    • G11B2020/10888—Digital recording or reproducing wherein a selection is made among at least two alternative ways of processing the kind of data being the selection criterion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2545—CDs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2583—Optical discs wherein two standards are used on a single disc, e.g. one DVD section and one CD section
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing

Abstract

A recording medium to which this invention is applied includes a first recording area 3 where a digital audio signal sampled at a predetermined sampling frequency and quantized by a predetermined number of bits is recorded, a first management area 2 where information for carrying out management of the digital audio signal recorded in the first recording area 3 is recorded, a second recording area 6 where a digital audio signal corresponding to the digital audio signal recorded in the first recording area 3 is recorded, and a second management area 5 where information for carrying out management of the digital audio signal recorded in the second recording area 6 is recorded, wherein discrimination data indicating that plural recording areas exist is recorded in the first management area 2. Thus, this recording medium has compatibility with the conventional CD player, and can be reproduced in the state of high sound quality by a higher rank reproducing equipment.

Description

Recording method
This case be that May 31, application number in 1996 are 96190802.5 the applying date, denomination of invention divides an application for the application for a patent for invention of " recording medium, pen recorder, playback method and replay device ".
Technical field
The present invention relates to a recording medium that comprises a plurality of posting fields, one records pen recorder on such recording medium to information, a playback method and the replay device of using this playback method that the information that is recorded on this recording medium is reset.
Background technology
CD (CD) originally is applied as music CD, and this music CD is called CD-DA (CD-DA), and its standard is generalized among the multimedia CD.As representational CD standard, following form is standardized.
The CD-DA form,
CD-ROM (compact disc-read only memory) form,
CD-I (compact disc interactive) form and
CD-ROM/XA (expansion structure type CD-ROM) form,
The CD-DA form is a kind of form about voice data.
This CD-DA form provides the foundation for other CD form, and regulation (or specify) physical arrangement and the signal processing system of CD.
The CD-ROM form is the form that expands to computer data, in this CD-ROM form, as the physical block structure, pattern 1 and 2 two kind of pattern are standardized, wherein error detection code (being abbreviated as EDC) in the pattern 1 and error correction code (being abbreviated as ECC) are additions, and the EDC/ECC in the pattern 2 omits.
The form of CD-I can expand to and also comprise graph data or character data or the like except voice data.Block structure in this CD-I form is a kind of block structure of the pattern 2 in the CD-ROM form.In this CD-I form, as the physical block structure, comprise that two patterns of pattern 1 and pattern 2 are standardized, wherein EDC and ECC addition in pattern 1, EDC and ECC omit in pattern 2.
In order to make computer data and the voice data purpose of mutually synchronization mutually, the CD-ROM/XA format specification computer data and voice data interweave.Block structure in this CD-ROM/XA form be a kind of in the CD-ROM form block structure of pattern 2.In this CD-ROM/XA form, as the physical block structure, comprise that two kinds of patterns of pattern 1 and pattern 2 are standardized, EDC and ECC are additions in pattern 1, EDC and ECC are the abridged in pattern 2.
Simultaneously, in recent years, someone advises using the CD of a kind of CD-R of crying (recordable CD), on the one side of this CD, covered the recording surface of the recorded matter of one deck organic (system), the size of this dish is the same with the surface of common CD big, makes arbitrary data all can write on the recording surface by light beam.In the CD-R CD, CD-MO (magneto-optic disk) form that is used for rewriteeing CD all is standardized with the CD-WO (CD of write-once) that is used for write-once type CD.In addition, the CD of variety of formats all produces by use CD-R CD as described above.
Under the situation of CD form, a track is the file structure of a set, data Write-once in this structure, or several sections of voice data.
Originally, CD-DA CD and CD-ROM CD etc. are (playback) CDs of only resetting, and be single session section (zone) dish, have by comprising the audio track that records voice data and recording single session section that one or more tracks of the data-track of computer data are formed.Yet (data) one-time write CD-R CD goes for providing a plurality of zones on CD.Therefore, can provide many sessions section (session) CD that utilizes this CD-R CD.
Simultaneously, be 16 bit data by the voice data of CD-DA format record on the CD-R dish.So, can not write down surpass 16 for example resemble voice data on its master tape original.
From above situation, so-called noise is shaped or high dither (dither) is utilized by modes such as most significant digit mappings, wherein consider auditory perception, to pass through the audio data recording of CD-DA form handle in the CD-R CD above 16, and be recorded as this state, make these voice datas be changed into 16 data and do not damage sound quality.
By these technology, use the CD-R CD of CD-DA format record to be reset out by common CD player.Yet, because the quality of data from having reduced in fact, can not be reset and the identical sound of master tape sound.
And, if used the CD-ROM form, just can be at CD-R disc recording such as above-mentioned voice data above 16.Yet owing to lost compatibility with the CD of CD-DA form, such CD-R CD can not be reset out by common CD player.
Further, the conventional form to the CD-R CD has a restriction.That is to say, for example, if by this way, promptly be called respectively by the audio session section of CD-DA format record with by two zones of the data session section of CD-ROM format record and in same CD, mix with so-called many sessions paragraph format, and the common CD player of making of CD-R cd-rom using is reset out, owing to write down the unacquainted code of possibility, then there is such possibility, it is impossible that the playback that promptly is recorded in the voice data of the audio track in the audio session section becomes, with/or the data that are recorded in the data-track in the data session section reset out with may being used as the voice data error.
Summary of the invention
Of the present inventionly be devoted to solve above-mentioned practical problems, the purpose of this invention is to provide that a kind of and traditional CD player keeps can be compatible, and the recording medium of the high tone quality state of resetting out in the replay device of top grade; With a kind of have the ability keep under the high tone quality state audio data recording to the such recording medium pen recorder and the playback method and the replay device of such recording medium of under the high tone quality state, resetting.
In order to solve above-described problem, the invention provides a kind of recording medium, comprise a first record area territory, wherein writing down with sampling of predetermined sampling frequency and the digital audio and video signals that quantizes by predetermined figure place; The information that the digital audio and video signals that is recorded in the first record area territory is managed is wherein being write down in one first management area; Wherein is writing down and the corresponding digital audio and video signals of the digital audio and video signals that is recorded in first record area in a second record area territory; With one second directorial area, wherein writing down the information that the digital audio and video signals that is recorded in the second record area territory is managed.
In addition, the digital audio and video signals that is recorded in the first record area territory is the digital audio and video signals of two passages, and the digital audio and video signals that is recorded in the second record area territory is and the corresponding two channel digital audio signals of two channel digital audio signals that are recorded in the first record area territory.
Further, the digital audio and video signals that is recorded in the first record area territory is to be divided in two data parts of high-order and low level one with the digital audio and video signals that predetermined figure place quantizes, and the digital audio and video signals that is recorded in the second record area territory then is two data of the digital audio and video signals that quantizes by predetermined figure place another in partly.
Further, the digital audio and video signals that is recorded in the first record area territory is a digital audio and video signals that obtains by sampling (down-sampling) digital audio and video signals that descends, and this digital audio and video signals is by the digital audio and video signals by predetermined sampling frequency sampling is obtained with cutting apart.The digital audio and video signals that is recorded in the second record area territory then be another by to by the digital audio and video signals of predetermined sampling frequency sampling with cutting apart the digital audio and video signals that obtains.
Further, the digital audio and video signals that is recorded in the second record area territory is a compressed signal.
Further, the time code corresponding to the first record area territory is recorded in the second record area territory.
Further, in order to solve above-described problem, pen recorder of the present invention is that a kind of being applicable to records a kind of pen recorder on the recording medium that comprises a plurality of zones to information, this device comprises, an acoustic processing part, be used for the sound signal of predetermined sampling frequency sampling, and the digitized audio message that is used for obtaining like this is converted to the information that is suitable for being recorded in the form on the recording medium from sound source; With a recording section, be used for being recorded on the first record area territory and second record area territory in a plurality of zones that constitute recording medium at the digitized audio message that acoustic processing is partly changed.
Further, acoustic processing partly comprises, one first acoustic processing part is used for the predetermined sampling frequency sound signal of taking a sample from first sound source, and the digitized audio message that quantizes to obtain like this by predetermined figure place; With one second sound processing section, be used for the sampling frequency identical with predetermined sampling frequency come from corresponding second sound source of first sound source the sound signal of taking a sample, and the digital audio and video signals that obtains like this of compression, and this recording section records the digitized audio message from first acoustic processing part on the first record area territory of recording medium, the digitized audio message from the second sound processing section is recorded on the second record area territory of recording medium.
Further, acoustic processing partly comprises: a quantized segment, be used for the predetermined sampling frequency sound signal of from sound source, taking a sample, and the digitized audio message that quantizes to obtain like this by predetermined figure place; With a separating part, be used for the digitized audio message that obtains from quantized segment like this is separated into high-order and information low level; And recording section, be used for that the digitized audio message from the high position of separating part recorded the first record area territory of recording medium and the digitized audio message from the low level of separating part recorded the second record area territory of recording medium.
Further, acoustic processing partly comprises: a quantized segment, be used for the predetermined sampling frequency sound signal of from sound source, taking a sample, and the digitized audio message that quantizes to obtain like this by predetermined figure place; With one (frequently) band partitioning portion, be used for a frequency with the digitized audio message of cutting apart from quantized segment, this frequency is the 1/n (n is an integer) of predetermined sampling frequency, so just can realize digitized audio message cut apart being divided into two groups; Recording section records the digitized audio message of a group in these two groups on the first record area territory on the recording medium, and the digitized audio message of another group is recorded on the second record area territory of recording medium.
Further, the time code corresponding to the first record area territory is recorded in the second record area territory.
Further, recording section comprises that one is used for that digitized audio message is recorded first record-header in first record area territory and one and is used for digitized audio message is recorded second record-header in second record area territory.
Further, in order to solve above-described problem, a playback method of the present invention is meant a kind of playback method of playback digitized audio message from a kind of recording medium, and this recording medium comprises: the first record area territory of writing down digitized audio message; Writing down and be used for first management area of information that the digitized audio message that is recorded in the first record area territory is managed; Writing down second record area territory corresponding to the digitized audio message of the digitized audio message that is recorded in the first record area territory; Be used for second management area of information that the digitized audio message that is recorded in the second record area territory is managed with writing down; This method comprises, the first step, and the information that reads first management area by a reproducing head is to differentiate whether there is the second record area territory on this management information of having read; Second step determined in the first step under the situation that has the second record area territory, and reproducing head is moved to second management area; The 3rd step, read the information of second management area by the reproducing head that in second step, moves, reading the digitized audio message in second record area territory, thereby a digitized audio message that reads is stored in the first memory according to this information; The 4th step, reproducing head is moved on the data record position in the first record area territory, in first record area, writing down and coming to be stored in comfortable the 3rd step corresponding digitized audio message of digitized audio message in the second record area territory in first storer; With the 5th step, be used in the reproducing head that moves in the 4th step and read the digitized audio message in first record area territory, and this digitized audio message stored in second storer, and output is stored in the digitized audio message in first storer and is stored in digitized audio message in the second memory.Further, the speed of digitized audio message being write first memory will be higher than from the speed of first memory read peek word audio-frequency information, and the speed of digitized audio message being write second memory will be higher than the speed that reads digitized audio message from second memory.
Further, this playback method comprises: in the 6th step, the stored number in the second memory and a predetermined value are compared; The 7th step, when in the 6th step, determining memory space in the second memory greater than this predetermined numerical value, take a process that reproducing head is moved on the data record position in the second record area territory, digitized audio message in the second record area territory is connected (continuously) together with the digitized audio message that is stored in first memory, and reads this digitized audio message; The 8th step, digitized audio message in the second record area territory of reading in the 7th step is stored in the first memory, and export digitized audio message that is stored in the first memory and the digitized audio message that is stored in the second memory with the method for phase mutually synchronization.
Further, the digitized audio message that is recorded in the first record area territory is the digitized audio message of two passages, and the digitized audio message that is recorded in the second record area territory is corresponding to the two channel digital audio information that are recorded in the digitized audio message in the first record area territory.
Further, be recorded in digitized audio message in the first record area territory and be experience with the take a sample digitized audio message of a high position of the digitized audio message that the back quantizes with predetermined figure place of predetermined sampling frequency, be recorded in digitized audio message in the second record area territory and then be the digitized audio message of low level of the digitized audio message of quantification.
Further, the digitized audio message that is recorded in the first record area territory is by taking a sample the back digitized audio message that quantizes with predetermined figure place with cutting apart the digitized audio message that obtains to having experienced with predetermined sampling frequency with predetermined frequency, thereby realization is divided into the grouping of the digitized audio message of high frequency band side and low-frequency band side, the sampling frequency that is lower than predetermined sampling frequency with usefulness comes one group digitized audio message is taken a sample, and the digitized audio message that is recorded in the second record area territory then is the digitized audio message that obtains by the digitized audio message that compresses another group.
Further, be recorded in digitized audio message in the second record area and comprise time code corresponding to the digitized audio message in first record area.
Further, a kind of playback method of the present invention is meant a kind of playback method of playback digitized audio message from a recording medium, and this recording medium comprises: one with digitized audio message and the address information first record area territory with the multiplex mode record; One is being write down and is being used for first management area of information that the digitized audio message that is recorded in the first record area territory is managed; The second record area territory that to write down in multiplexed mode corresponding to the digitized audio message and the address information in first record area territory; With one writing down second management area that is used for information that the digitized audio message that is recorded in second record area is managed.This method also comprises: first read step, read digitized audio message and address information by first replayed portion from the first record area territory; Second read step reads digitized audio message and address information by second replayed portion from the second record area territory; An output step, according to the digitized audio message that in first read step, obtains and address information and digitized audio message that in second read step, obtains and address information outputting digital audio information and keep between them synchronously; First discriminating step is differentiated and to be used for temporary transient storage and whether to equal or exceed a predetermined numerical value from the quantity of the information stores of the memory portion of the digitized audio message of second replayed portion; The replayed portion waiting step makes that working as the memory space that determines the information that is stored in memory portion in first discriminating step equals or exceeds under the situation of predetermined value, carries out a control so that impel second replayed portion to be in waiting status; Second discriminating step is used for differentiating the situation of low memory in predetermined numerical value; Restart step with a replayed portion, when in second discriminating step, determining low memory, carry out a control so that restart second replayed portion in predetermined value.
Further, the digitized audio message that is recorded in the first record area territory is the digitized audio message of two passages, and the digitized audio message that is recorded in the first record area territory is the digitized audio message corresponding to two passages of the digitized audio message that is recorded in the first record area territory.
Further, be recorded in digitized audio message in the first record area territory and be the digitized audio message that has experienced with the high position of the digitized audio message that quantizes with predetermined figure place after the predetermined sampling frequency sampling, the digitized audio message that is recorded in the second record area territory then is the digitized audio message of low level of the digitized audio message of this quantification.
Further, be recorded in digitized audio message in the first record area territory and be after having experienced with predetermined frequency and come digitized audio message that the digitized audio message that quantizes with predetermined figure place is obtained with cutting apart with predetermined frequency sample, so that carry out thereby the grouping of the digitized audio message that is divided into high frequency band edge and low frequency band edge is come the sampling of set of number audio-frequency information with a sampling frequency that is lower than predetermined sampling frequency, the digitized audio message that is recorded in the second record area territory then is the digitized audio message that obtains by the digitized audio message that compresses another group.
Further, in order to solve above-described problem, replay device of the present invention is meant the replay device that is used for from a recording medium playback digitized audio message, and this recording medium comprises: the first record area territory of recording digital audio information; Record is used for first management area of information that the digitized audio message that is recorded in the first record area territory is managed; Writing down second record area territory corresponding to the digitized audio message of the digitized audio message that is recorded in the first record area territory; With writing down second management area that is used for information that the digitized audio message that is recorded in the second record area territory is managed.This device comprises: be used for from the playback device of recording medium playback digitized audio message; The first memory device of the digitized audio message that storage is read from the first record area territory with this playback device; The second memory device of the digitized audio message that storage is read from the second record area territory with this playback device; Differentiate and to be stored in the first memory device data volume and whether to equal or exceed first of a predetermined numerical value and differentiate device; Differentiate and to be stored in the second memory device data volume and whether to equal or exceed second of a predetermined numerical value and differentiate device; Be used for moving the moving device of described playback device; With a control device, be used for this playback device being moved to the second record area territory according to the information of first management area, thereby the digitized audio message of reading from the second record area territory is stored into the second memory device, determine the data volume that is stored in the second memory device in the device when being equal to or greater than predetermined numerical value when differentiating thus second, described control device work is to move to first storage area to described playback device, store in this zone and the corresponding digitized audio message of digitized audio message that exists in the second memory device, thereby the digitized audio message that reads from the first record area territory is stored in the first memory device, with output from the digitized audio message in first and second storage component parts, keep simultaneously between them synchronously.
Further, the digitized audio message that is recorded in the first record area territory is the digitized audio message of two passages, is recorded in digitized audio message in the second record area territory and is two channel digital audio information corresponding to the digitized audio message that is recorded in the first record area territory.
Further, the digitized audio message in second record area territory is compressed digitized audio message.
Further, the digitized audio message that is recorded in the first record area territory is the digitized audio message that has experienced with on the high position of the digitized audio message that quantizes with predetermined figure place after the sampling of predetermined sampling frequency, and the digitized audio message that is recorded in the second record area territory is the digitized audio message on the low level of digitized audio message of this quantification.
Further, be recorded in digitized audio message on the first record area territory and be and experienced coming the digitized audio message that quantizes with predetermined figure place is done that band is cut apart and the digitized audio message that obtains with predetermined frequency after the predetermined sampling frequency sampling, thereby realization comes the set of number audio-frequency information is taken a sample to use the sampling frequency that is lower than predetermined sampling frequency to the grouping of the digitized audio message that is divided into high frequency band edge and low frequency band edge; The digitized audio message that is recorded in the second record area territory is the digitized audio message that obtains through the digitized audio message of another group of overcompression.
Further, the digitized audio message that is recorded in the second record area territory comprises the time code corresponding to the digitized audio message that is recorded in the first record area territory.
Further, replay device of the present invention is meant the replay device that is applicable to playback digital audio and video signals from a recording medium, and this recording medium comprises: digitized audio message and address information write down superincumbent first record area territory with multiplex mode; First management area of writing down the information that the digitized audio message that is recorded in the first record area territory is managed; Digitized audio message and address information corresponding to the first record area territory are recorded superincumbent second record area territory with multiplex mode; With second management area of writing down the information that the digitized audio message that is recorded in the second record area territory is managed, this device comprises: the first playback device that reads digitized audio message and address information from the first record area territory; Read the second playback device of digitized audio message and address information from the second record area territory, storage is from the storage component part of the digitized audio message of the second playback device; According to from the address information in first record area territory with control the control device of the described storage component part and the second playback device from the address information in second record area territory; The hybrid device that the digitized audio message of being reset by the first playback device and the digitized audio message reset by the second playback device are mixed; With the output device that is used for exporting the digitized audio message that mixes at hybrid device.
Further, the digitized audio message that is recorded in the first record area territory is the digitized audio message of two passages, and the digitized audio message that is recorded in the second record area territory is two channel digital audio information corresponding to the digitized audio message that is recorded in the first record area territory.
Further, the digitized audio message in second record area territory is compressed digitized audio message.
Further, the digitized audio message that is recorded in the first record area territory is the digitized audio message that has experienced with the high position of the digitized audio message that quantizes with predetermined figure place after the sampling of predetermined sampling frequency, and the digitized audio message that is recorded in the second record area territory then is the digitized audio message of the low level in the digitized audio message of quantification.
Further, the digitized audio message that is recorded in the first record area territory is to have experienced under predetermined sampling frequency after the sampling with under the predetermined frequency digitized audio message that quantizes with predetermined figure place being made to be with the digitized audio message of cutting apart and obtaining, thereby realization is taken a sample to the digitized audio message of a group to use the sampling frequency that is lower than predetermined sampling frequency to the grouping of the digitized audio message that is divided into high frequency band edge and low frequency band edge; With the digitized audio message that is recorded in the second record area territory then be the digitized audio message that obtains by the digitized audio message that compresses another group.
According to recording medium of the present invention, might make a kind of recording medium, the recording medium of a dish type for example, make data collectively be recorded in respectively first session section of forming by first management area and first record area territory (session) and the second session section of forming by second management area and second record area territory.Further, the form that data can be different is relevant to the first session section and the second session section is come record respectively.In addition, to be recorded in the first session section with the digitized audio message of CD-DA format record, the digitized audio message that connects together with the digitized audio message that is recorded in the first session section is recorded in the second session section, might produce so a kind of recording medium be suitable for making voice data to be recorded with the state of high tone quality and maintenance compatible mutually with traditional CD player.
In addition, make recording medium that a kind of like this structure be arranged, make the digitized audio message of four-way to be recorded in separately the session section by two passages, digitized audio message is recorded in the first session section at least with the CD-DA form, thus might make a kind of recording medium be suitable for making voice data to be recorded with the state of high tone quality and maintenance compatible mutually with traditional CD player.
Further, for example, make recording medium that such structure be arranged, 1 to 16 part (these digital audio and video signals) greater than 16 digitized audio messages is recorded to the first session section by the CD-DA form, the digital audio and video signals of all the other, for example, by the CD-ROM form, be recorded in the second session section.Might make so a kind of recording medium be suitable for making voice data to be recorded with the state of high tone quality and maintenance compatible mutually with traditional CD player.
In addition, for example, make recording medium that such structure be arranged, by being cut apart by band with a predetermined frequency with the digitized audio message of taking a sample by a sampling frequency of common CD-DA format specification (or appointment), for example, this frequency can be half (1/2) of sampling frequency, so that be grouped into the high frequency band edge of frequency and the digitized audio message of low frequency band edge, thereby the digitized audio message of the sampling low frequency band edge that descends, and it is pressed the CD-DA format record to the first session section, and pass through as the CD-ROM form, the digitized audio message of high frequency band edge is recorded the second session section, might make a kind of recording medium like this and be suitable for making state recording and maintenance that voice data can high tone quality compatible mutually with traditional CD player.
In addition, according to pen recorder of the present invention, described acoustic processing part number is the data of digital form to allow it with a predetermined sampling frequency sampling from the audio sound of sound source, and this numerical data is transformed into the data of the form that is suitable for being recorded in the recording medium that comprises a plurality of posting fields.In this case, suppose that recording medium is by the first session segment structure that comprises first management area and first record area territory, comprise that the second session segment structure in second management area and second record area territory is formed, and the sound conversion portion becomes the data of CD-DA form to the digital data conversion that will be recorded in the first area, the digital data conversion that be recorded in second area is become the data of CD-ROM form.Just as described above, this posting field records the CD-DA formatted data first record area territory and the CD-ROM formatted data is recorded the second record area territory.
Further, under the situation that the acoustic processing part is made up of first acoustic processing part and the second sound processing section, first acoustic processing part is transformed into numerical data to two channel audio information from first sound source, quantizes this numerical data then and it is converted to the data of CD-DA form; The second sound processing section corresponding to first sound source for example be transformed into numerical data from two channel audio signals of second sound source, thereby compress this numerical data then it is converted to the CD-ROM formatted data.In addition, recording section from the digital data record of first acoustic processing part to the first record area territory, from the digital data record of the second sound processing section in the second record area territory.
Further, under the situation that the acoustic processing part is made up of quantized segment and separating part, quantized segment from take a sample out a sound signal and it is converted to the data (numerical data) of sampling of sound source, quantizes this sampled data (numerical data) it is converted to the digital data greater than 16 with predetermined sampling frequency; Separating part allows the numerical data greater than 16 that obtains at quantized segment experience the separation conversion, makes, for example the numerical data of 16 of high-orders is transformed into the CD-DA formatted data, and remaining low-order bit numerical data is transformed into the CD-ROM formatted data.Recording section records for example CD-DA formatted data the first record area territory and the CD-ROM formatted data is recorded the second record area territory.
Further, under the situation that the acoustic processing part is made up of quantized segment and band partitioning portion, quantized segment is with take a sample from a sound source sound signal and it is converted to sampled data (numerical data) of predetermined sampling frequency, and quantize this sampled data (numerical data) thus it is converted to numerical data greater than 16; The band partitioning portion is that the frequency of this 1/n that pre-determines sampling frequency (n is an integer) is with this numerical data and is cut apart with one, promptly, after under a sound signal has experienced than the also big sampling frequency of the twice of 44.1kHz, taking a sample, this 44.1kHz is according to the sampling frequency as CD-DA form defined (or appointment), this sound signal is quantized, the numerical data that quantizes is divided into 44.1kHz two groups of the voice data that is the high frequency band edge on boundary and low frequency band edge, thereby the digital data conversion of low frequency end is become the CD-DA formatted data, the digital data conversion of front end is become the CD-ROM formatted data.Recording section records the first record area territory to the CD-DA formatted data, and the CD-ROM formatted data is recorded the second record area territory.
Further, under the situation that recording section is made up of first record-header and second record-header, first record-header record of CD-DA form realization, second record-header record of CD-ROM form realization to the second record area territory to the first record area territory.
Further, according to playback method of the present invention, the first step, whether the information of first management area in the read-out recording medium exists thereby determine the second record area territory according to this management information.When determining in the first step when having the second record area territory, second step just provided the access to second management area, was writing down the information for the digitized audio message of realizing the second record area territory in second management area.In the 3rd step,, read the digitized audio message in the second record area territory, and the digitized audio message that reads is like this stored in the first memory according to the management information in second management area that access is provided in second step.The 4th the step, the access to the data recording position in the first record area territory is provided, in the first record area territory, writing down be stored in first memory in the corresponding digitized audio message of digitized audio message.In the 5th step, playback record and stores the digitized audio message of reading like this in the second memory at the locational digitized audio message of data recording of access in the 4th step from the first record area territory.Therefore, the digitized audio message that is stored in first memory in the 3rd step is exported in the mode of mutually synchronization mutually with the digitized audio message in being stored in second memory.
Further, in the 6th step, memory space and a predetermined value to the data in the second memory, the stored number that for example in first memory, allows, compare mutually, the digitized audio message that storage in the 5th step is arranged in this second memory when the memory space of the data in the second memory during greater than this predetermined value, is handled operation and being entered for the 7th step.In the 7th step, the access to the data recording position in the second record area territory is provided, the second record area territory writing down be stored in first memory in the link to each other digitized audio message of (joining) of digitized audio message.Therefore, read this digitized audio message.In the 8th step, the digitized audio message from the second record area territory that reads in the 7th step is temporarily stored in the first memory, the digitized audio message that is stored in this first memory is exported in the mode of mutually synchronization mutually with the digitized audio message that is stored in the 5th goes on foot in the second memory.
Further, using a recording medium so that the digitized audio message of two passages is recorded to the first record area territory and is recorded under the situation in second record area territory corresponding to two channel digital audio information of the digitized audio message that is recorded in the first record area territory, in the 5th step, the digitized audio message that is recorded in the first record area territory is synchronously reset with the digitized audio message that is recorded in the second record area territory, thus, the digitized audio message of multichannel high tone quality is output.
Further, using a recording medium so that be recorded in the first record area territory greater than that part (everybody digitized audio message) of 16 digitized audio message up to the 16th, the digitized audio message of all the other is recorded under the situation in second record area territory, in the 5th step, the digitized audio message that is recorded in the first record area territory is synchronously reset with the digitized audio message that is recorded in the second record area territory.Therefore, the digitized audio message of the high tone quality that increased of figure place is output.
Further, using a recording medium, for example make and to cut apart resulting digitized audio message and be recorded in the first record area territory by the digitized audio message of being taken a sample by the sampling frequency of common CD-DA format specification (appointment) being with a preset frequency, the preset frequency that this band is cut apart for example is one and equals half frequency of sampling frequency, with respect to being the descend digitized audio message of sampling low frequency band edge of half frequency of sampling frequency; And the digitized audio message that obtains by the digitized audio message that compresses the high frequency band edge is recorded under the situation in second record area territory, in the 5th step, compressed digitized audio message is resumed (reconstruction) and comes out, and the digitized audio message that is resumed is so synchronously reset with the digitized audio message that is recorded in the first record area territory.Therefore, the high tone quality digitized audio message of so-called high sampling system (being that sampling frequency has increased) is output.
Further, according to playback method of the present invention, in first read step, first replayed portion is from the first record area territory reading number audio-frequency information and the address information of recording medium.In second read step, second replayed portion is from the second record area territory reading number audio-frequency information and the address information of recording medium.In the output step, be output according to the two the address information that is recorded in the posting field separately according to the digitized audio message that is recorded in two digitized audio messages in the posting field separately.In first discriminating step, whether the memory space from the digitized audio message of second replayed portion that no matter temporarily is stored in memory portion reaches a predetermined amount, all will determine the memory space of the permission of memory portion.When the amount that determines the information that is stored in memory portion in first discriminating step reaches the memory space of a permission, just carry out the replayed portion waiting step.In this step, second replayed portion is controlled so that be in waiting status.In second discriminating step, whether the information storage that determines memory portion is lower than predetermined amount,, whether provides enough spaces (memory span) that is.In second discriminating step, determine when providing (assurance) that enough spaces (memory span) are arranged, then carry out the step of restarting of replayed portion in memory portion.In this step, second replayed portion is controlled so that it is restarted.
Further, using a recording medium so that the digitized audio message of two passages is recorded in the first record area territory, be recorded under the situation in second record area territory with digitized audio message corresponding to two passages of the digitized audio message that is recorded in the first record area territory, in first read step, the digitized audio message and the address information that are recorded in the first record area territory are read out.In second read step, the digitized audio message and the address information that are recorded in the second record area territory are read out.In the output step, according to the address information that is recorded in posting field separately that reads in first step and second step, two digitized audio messages that are recorded in posting field are separately synchronously reset.Therefore, the digitized audio message of multichannel high tone quality is output.
Further, for example using a recording medium so that be recorded in the first record area territory greater than that part (everybody digitized audio message) of 16 digitized audio message up to 16, the digitized audio message of all the other is recorded under the situation in second record area territory, in first read step, the digitized audio message and the address information that are recorded in the first record area territory are read out.In second read step, the digitized audio message and the address information that are recorded in the second record area territory are read out, in the output step, according to the address information that is recorded in posting field separately of reading in first and second reading steps, two digitized audio messages that are recorded in the posting field are separately exported synchronously.Therefore, the digitized audio message of the high tone quality that increased of figure place is output.
Further, for example using a recording medium so that the digitized audio message of being taken a sample by the sampling frequency of common CD-DA format specification (appointment) is cut apart resulting digitized audio message and is recorded in the first record area territory by being with a preset frequency, the preset frequency that this band is cut apart for example is one and equals half frequency of sampling frequency, with with respect to being that half frequency of sampling frequency is come the sampling that descends of digitized audio message to the low-frequency band side, and the information that the digitized audio message by compression high frequency band side obtains is stored under the situation in the second record area territory, in first reading step, the digitized audio message and the address information that are recorded in the first record area territory are read out.In second reading step, be recorded in the second record area territory compression digitized audio message and address information be read out, and the information of having compressed is further recovered (reconstruction) and is come out.In the output step,, be recorded in separately two digitized audio messages of posting field and synchronously exported according to the address information that is recorded in the posting field separately.Therefore, (being that sampling frequency has increased) high tone quality digitized audio message of so-called high sampling system is output.
Further, according to replay device of the present invention, described playback device is reset from the digitized audio message of recording medium, the first memory device stores is from the digitized audio message in the first record area territory of recording medium, and the second memory device stores is from the digitized audio message in the second record area territory of recording medium.The first differentiation device is differentiated the amount that is stored in the data in the first memory device and whether is reached a predetermined amount, for example, and the memory space of permission.The second differentiation device is differentiated the amount that is stored in the data in the second memory device and whether is reached a predetermined amount, for example, and the memory space of permission.Moving device is used for moving described playback device.Described control device carries out a control, to allow moving device to carry out a move operation according to the information in first control area, this information that is recorded in first control area is what to be used for realizing to the management in first record area territory, thereby allow it that access to the second record area territory is provided, the digitized audio message that allows the second memory device stores to read thus from the data recording position that is provided access, and then when according to determining the data volume that is stored in the second memory device from second result who differentiates device when being equal to or greater than described predetermined quantity, this control device carries out a control and carries out a move operation so that the access to the first record area territory to be provided to allow moving device, thereby the digitized audio message that allows the first memory device stores to read, and be used for carrying out a control and export digitized audio message from first and second storage component parts in the mode of phase mutually synchronization from the data recording position that is provided access.
Further, using a recording medium so that the digitized audio message of two passages is recorded in the first record area territory, and the digitized audio message corresponding to two passages of the digitized audio message that is recorded in the first record area territory is recorded under the situation in second record area territory, the first memory device stores is recorded in the digitized audio message in first record area territory, and the second memory device stores is recorded in the digitized audio message in second record area territory.Control device realizes that control to first and second storage component parts is so that allow storage component part separately synchronously export the digitized audio message that is stored in wherein.Therefore, the digitized audio message of multichannel high tone quality is output.
Further, for example using a recording medium so that be recorded in the first record area territory greater than that part (everybody digitized audio message position) of 16 digitized audio message up to the 16th, the digitized audio message of all the other is recorded under the situation in second record area territory, the first memory device stores is recorded in the digitized audio message in first record area territory, and the second memory device stores is recorded in the digitized audio message in second record area territory.Control device is controlled first and second storage component parts so that allow storage component part separately synchronously export the digitized audio message that is stored in wherein.Therefore, the digitized audio message of the high tone quality that increased of figure place is output.
Further, for example using a recording medium so that the digitized audio message of being taken a sample by the sampling frequency of common CD-DA format specification (appointment) is cut apart resulting digitized audio message and is recorded in the first record area territory by being with a preset frequency, the preset frequency that this band is cut apart for example is one and equals half frequency of sampling frequency, with with respect to being that half frequency (band) of sampling frequency come digitized audio message to the low-frequency band side to descend information that sampling and the digitized audio message by compression high frequency band side obtain is stored under the situation in the second record area territory, the first memory device stores is recorded in the digitized audio message in the first record area territory, and the second memory device stores is recorded in the digitized audio message that was compressed in the first record area territory.Control device carries out a control so that recover (reconstruction) compressed digitized audio message, and carries out one and control so that allow the first memory device export storage digitized audio message wherein and the digitized audio message that is recovered in the mode of phase mutually synchronization.Therefore, (being that sampling frequency has increased) high tone quality digitized audio message of so-called high sampling system is output.
Further, according to replay device of the present invention, the first playback device reads out the digitized audio message and the address information in first record area territory in recording medium, and the second playback device reads out the digitized audio message and the address information in second record area territory in recording medium.Described storage component part storage is from the digitized audio message of the second playback device.Control device is carried out such control so that allow the second playback device be in waiting status according to two address informations in the storage component part that is stored in separately when the information storage in the storage component part reaches a permission quantity.Described hybrid device mixes the digitized audio message that output device output mixes the digitized audio message of being read by the first playback device with from the digitized audio message of storage component part in hybrid device.
Further, using a recording medium so that the digitized audio message of two passages is recorded in the first record area territory and is recorded under the situation in second record area territory corresponding to two channel digital audio information of the digitized audio message that is recorded in the first record area territory, the first playback device playback record is in the digitized audio message and the address information in first record area territory, and the second playback device playback record is in the digitized audio message and the address information in second record area territory.Hybrid device according to the address information that is recorded in posting field separately that in the first and second playback devices, is read out with the mode hybrid recording of phase mutually synchronization at two digitized audio messages of posting field separately.Output device is exported multichannel high tone quality digitized audio message.
Further, for example, using a recording medium so that be recorded in the first record area territory greater than the part (position of digitized audio message) up to the 16th of 16 digitized audio message, the digitized audio message of remainder is recorded in the second record area territory, the first playback device playback record is in the digitized audio message and the address information in first record area territory, and the second playback device playback record is in the digitized audio message and the address information in second record area territory.Hybrid device according to the address information that is recorded in posting field separately that in the first and second playback devices, is read out with the mode hybrid recording of phase mutually synchronization at two digitized audio messages of posting field separately.The high tone quality digitized audio message that output device output figure place has increased.
In addition, for example, using a recording medium so that the digitized audio message of being taken a sample by the sampling frequency of common CD-DA format specification (appointment) is cut apart resulting digitized audio message and is recorded in the first record area territory by being with a preset frequency, the preset frequency that this band is cut apart for example is one and equals half frequency of sampling frequency, with with respect to being that half frequency of sampling frequency come digitized audio message to the low-frequency band side to descend information that sampling and the digitized audio message by compression high frequency band side obtain is stored under the situation in the second record area territory, the first playback device playback record is in the digitized audio message and the address information in first record area territory, and the second playback device playback record is in the compressed digitized audio message and the address information in second record area territory.Hybrid device is according to the address information of reading in the first and second playback devices and for example allow compressed information pass through the address information that decoding processing obtains in decoded portion, with the mode hybrid recording of phase mutually synchronization at two digitized audio messages of posting field separately.Output device is exported the high tone quality digitized audio message of so-called high sampling system (being that sampling frequency has increased).
Particularly, according to an aspect of the present invention, a kind of recording method at the recording medium identifying recording layer is provided, wherein, record is with the digital audio and video signals that also quantizes with a predetermined figure place (X+Y) of a predetermined sampling frequency sampling on recording medium, and this recording method comprises step: write down the digital audio and video signals with X position quantification this predetermined sampling frequency sampling and that use (X+Y) position in the first record area territory of recording medium; Write down first management data with the digital audio and video signals of management accounts in first management area of recording medium in the first record area territory; At the digital audio and video signals that the second record area territory of recording medium record quantizes with Y position this predetermined sampling frequency sampling and that use (X+Y) position, wherein said first and second posting fields are the radial zones that separate; And write down second management data with the data sound signal of management accounts in the second record area territory in second management area of recording medium.
According to an aspect of the present invention, a kind of recording method at the recording medium identifying recording layer also is provided, wherein on recording medium, write down the multi-channel digital sound signal, each passage of described digital audio and video signals is by with a predetermined sampling frequency sampling and quantized with a predetermined figure place, and this recording method comprises step: the first record area territory of recording medium record with this predetermined sampling frequency sampling, and with a passage of the digital audio and video signals of this predetermined figure place quantification; Write down first management data with the digital audio and video signals of management accounts in first management area of recording medium in the first record area territory; The second record area territory of recording medium record with this predetermined sampling frequency sampling, and with another passage of the digital audio and video signals of this predetermined figure place quantification; And write down second management data with the digital audio and video signals of management accounts in the second record area territory in second management area of recording medium; Wherein be recorded in digital audio and video signals in the first record area territory and be by cutting apart a high position that the digital audio and video signals that quantizes with described predetermined figure place obtains and a part in two data parts of low level; And wherein be recorded in another part that digital audio and video signals in the second record area territory is the data division of the digital audio and video signals that quantizes with described predetermined figure place.
According to an aspect of the present invention, a kind of recording method at the recording medium identifying recording layer also is provided, wherein, on recording medium record with a predetermined sampling frequency sampling and with a predetermined figure place digital audio and video signals that quantize and that be divided into two frequency bands, this recording method comprises step: the first record area territory of recording medium record with this predetermined sampling frequency sampling and with this predetermined figure place digital audio and video signals quantification and that be divided into a frequency band; Write down first management data with the digital audio and video signals of management accounts in first management area of recording medium in the first record area territory; The second record area territory of recording medium record with this predetermined sampling frequency sampling, and with this predetermined figure place digital audio and video signals that quantize and that be divided into another frequency band, wherein first and second posting fields are radial zones of separation; And write down second management data with the digital audio and video signals of management accounts in the second record area territory in second management area of recording medium.
Description of drawings
Fig. 1 has shown the figure of the structure of the applied recording medium of the present invention.
Fig. 2 has shown the figure of the CIRC frame of the data layout of explaining recording medium.
Fig. 3 has shown the figure that explains according to the son coding of CIRC frame.
Fig. 4 has shown the data layout of the Q passage of sub-coding.
Fig. 5 has shown the data layout of the Q passage that is recorded in management area in the recording medium.
Fig. 6 has shown the block scheme of structure of first embodiment of the applied pen recorder of the present invention.
Fig. 7 has shown the block scheme of the acoustic processing structure partly of this pen recorder.
Fig. 8 has shown the block scheme of structure of second embodiment of the applied pen recorder of the present invention.
The block scheme of the structure of first example that has been out of shape that Fig. 9 has shown this pen recorder.
Figure 10 has shown the block scheme of structure of example of second distortion of this pen recorder.
Figure 11 has shown the block scheme of structure of example of the 3rd distortion of this pen recorder.
Figure 12 has shown the block scheme of structure of the 3rd embodiment of the applied pen recorder of the present invention.
Figure 13 has shown the block scheme of structure of first embodiment of the applied replay device of the present invention.
Figure 14 has shown the applied playback method of explanation the present invention, promptly according to a process flow diagram of the replay device of first embodiment.
Figure 15 A and Figure 15 B have shown the figure of explaining storage operation in the described replay device.
Figure 16 has shown for two memory datas and has write or data are read regularly time diagram.
Figure 17 has shown the block scheme of structure of example of first distortion of the applied replay device of the present invention.
Figure 18 has shown the block scheme of structure of example of second distortion of described replay device.
Figure 19 has shown the block scheme of structure of example of the 3rd distortion of described replay device.
Figure 20 has shown the block scheme of structure of second embodiment of the applied replay device of the present invention.
Figure 21 explains the applied playback method of the present invention, promptly according to a process flow diagram of the replay device of second embodiment.
Embodiment
Be explained in detail below in conjunction with the preferred embodiment of accompanying drawing the recording medium among the present invention, pen recorder, playback method and replay device.In the following description, to be used as recording medium with the recording medium CD-R CD of dish type, be suitable for digitized audio message record the pen recorder that is used for disc-shape recoding medium on this CD-R CD be used as pen recorder and be suitable for the digitized audio message of record reset this CD-R CD the playback method that is used for disc-shape recoding medium and replay device is used as playback method and replay device is that example describes.
For example, as shown in Figure 1, CD-R dish 1 comprises that one is being write down under predetermined sampling frequency sampling and with the first record area territory 3 of the digital audio and video signals (information) of predetermined figure place quantification; First management area 2 of writing down the information that the digital audio and video signals that is recorded in the first record area territory is managed; A second record area territory 6 of writing down corresponding to the digital audio and video signals of the digital audio and video signals that is recorded in first record area territory 3; With second management area 5 of writing down the information that the digital audio and video signals that is recorded in second record area territory 6 is managed.
In addition, in CD-R CD 1, part provides a center pit 8 in the central, this CD-R CD is a kind of many sessions of what is called section (multi-session) CD, wherein the first session section 9 is by first management area 2, first record area territory 3 and draw compositions such as regional 4 corresponding to first of these zones, the second session section 10 is by second management area 5, second record area territory 6 and draw corresponding to second of these zones that zone 7 forms.In this case, the data of CD-DA form are written in (recording) first session section 9, and the data of CD-ROM form are written in the second session section 10.
Before the management of explaining the address information on the recording medium of the present invention, descriptor coded frame at first.
As CD system, resemble CD-DA, or the error correction code of CD-ROM etc., used CIRC (sign indicating number is covered in cross interleave Reed Lip river) here.In this CD system, the signal that is recorded on the disc recording medium is to be the signal that the 44.1kHz sampling obtains with the sampling frequency.In addition, the data of per 6 resample area of these sampled data are collected in separately the CIRC frame.
The form of collecting the signal in the CIRC frame separately is a sort of form as shown in Figure 2, for example, in each CIRC frame 85, is provided with synchronous (sync) mode data zone 81 of one 24; One 14 sub-coding region 82; A routine data zone 83 of forming by 16 routine data D0～D15 that each have 14; A parity data zone 84 of forming by 4 parity data P0～P3 that each have 14; The parity data zone 84 that different routine data zone 83 is different with one.In addition, for each regional data that are coupled, all provide the white space of 3 bytes with respect to various piece.Therefore, each CIRC frame 85 comprises 724 bit data altogether.
Further, Fig. 3 shows through 98 CIRC frames 85 after the ordering and is collected the situation that (concentrating) got up each regional data of each CIRC frame 85 are coupled together.
As above-mentioned shown in Figure 3, every 89 that is formed by 98 CIRC frames 85 set is by frame synchronization mode part 86, and sub-coded portion 87 and data and parity part 88 are formed.
In addition, son coding subregion 87 comprises synchronous (sync) pattern of 98 CIRC frames and the data division that is defined by eight symbol P, Q, R, S, T, U, V, W.Particularly, the data division that is defined by symbol P, Q is used to the control to the accessing operation of this replay device.
In this case, in each zone shown in Figure 1, provided the address of the absolute position on the expression CD-R CD 1.These addresses are subjected to the management by the data of symbol Q definition.
Fig. 4 has shown the form of the first session section 9, that is, and and the data division that in the CD-DA form, defines by symbol Q.
Data structure by this format specification (providing) is the data structure of repeatedly being made up of information frame 120, and each information frame 120 is by orbit number part 101, index part 102, and time spent part 110,0 (zero) part 106 and absolute time part 111 are formed.More specifically, time spent part 110 by min (minute) component 103, sec (second) component 104 and frame number component 105 formed; And absolute time 111 is similarly by minute component 107, and second component 108 and frame number component 109 are formed.Frame number component 105,109 all is the numeral that 1 second is further segmented.
In addition, the data of various piece are made up of 8 data, and are showed by two numerals (number), for example by BCD (binary-coded decimal representation (BCD)) representation.
In Fig. 4, be under the situation of " 01 "～" 99 " at the data TNO of orbit number 101, these data TNO represents to move number, and so-called orbit number represents to be recorded in the order of the data in first record area territory 3.In time spent part 110 and absolute time part 111, be expressed out with the corresponding position that is recorded in the data of data and parity part 88 of orbit number in the first record area territory 3.That is, these data are used as the address of data and parity part 88.
Further, index part 102 is the mobile parts that provide by further segmentation.In this example, be under the situation of " 00 " at the data I X of index part 102, this data I X represents that information frame 120 is the information frames that writing down the data in the time-out zone between representing to move.Particularly, it is 0 minute 0 second 0 frame that the reference position of the time-out that (early) once moves before is set (supposition), and data I X above-mentioned is used as the reference position of the data of expression in time spent part 110 and absolute time part 111.In addition, 0 (zero) is inserted in 0 part 106.
In this example, each time from each beginning of moving is recorded in the time spent part 110.These times continue to be added in together up to suspending the zone and occur, and when orbit number is updated since second time of 0 (zero).On the contrary, each time of adding up or absolute time from the reference position is recorded in the absolute time part 111.
In addition, be under the situation of " AA " at the data TNO of orbit number 101, these data TNO represents that information frame 120 is first information frames of drawing zone 4.
Particularly, be under the situation of " 00 " at digital TNO, these data TNO represents that information frame 120 is the data in first management area 2.Form in this case is the repetition of the data structure represented among Fig. 5.
In Fig. 5, when the data P0 of pointer part (point portion) 112 is, for example, under the situation of " 00 "～" 99 ", these data P0 represents that Frame 120 is information frames of expression absolute time, each motion beginning of on these absolute times, representing by data P0, and be recorded in the absolute time part 111 each data representation each move the absolute time that is begun.In the present example, the start bit of first time-out installs (supposition) on 0 hour 0 minute 0 frame.
In addition, at data P0 is under the situation of " A0 ", these data P0 represents that information frame 120 is information frames that first number of moving is expressed out, and the data PMIN that is recorded in minute component 107 of absolute time part 111 represents this No. of moving first, and as the data PSEC in minute component 107 and second component 108, PFR goes on record " 00 ".
Further, be under the situation of " A1 " at data P0, these data P0 represents that information frame 120 is information frames of last number of moving of expression.Move the data PMIN of number conduct in min component 107 at last and go on record, and " 00 " is that PFR goes on record as the data PSEC in second component 108 and frame number component 109.
In addition, at data P0 is under the situation of " A2 ", these data P0 represents that information frame 120 is information frames of an absolute time of expression, first draws zone 4 beginnings on this absolute time, another absolute time of drawing zone 4 beginnings is as the data PMIN in absolute time part 111, PSEC, PFR goes on record.
In the present example, in any case described in the above, " 00 " is to be recorded in each data division of time spent part 110.
Further, the appearance of the second session section 10 or do not occur also in pointer part 112, showing.For example, when " B0 " is assumed to be when writing pointer part (point portion) 112 as data P0, these data P0 represents that second management area 5 is to be provided at first periphery of drawing the time-out part of zone after 4, and the absolute time of representing this position for example is expressed out in component 104 and the frame number part 105 in minute component 103 of time spent part 110, second.The absolute time that it should be noted that the reference position of expression second management area 5 can not only be recorded in the time spent part 110, and is recorded in the absolute time part 111.
Further, be recorded in the data corresponding to the data that are recorded in first record area territory 3 under the situation in second record area territory 6, pointer part 112 is that the information frame of " E0 " is provided.Under the non-existent situation of this information frame, it has represented that corresponding CD is to have only character data to be recorded in the CD of second management area 5 of the second session section 10, and does not have data to be recorded in the second record area territory 6, the promptly so-called CD that has character.
It should be noted that, when the example that the information frame that is recorded in pointer 112 as " B0 " is provided as the differentiation data whether the expression second session section 10 exist is used, the present invention is not limited to a kind of like this embodiment, but the information frame that " C0 " is recorded wherein also can be as differentiating data.Be provided as when differentiating data and being used for differentiating the CD of CD-R CD 1 and tape character when " E0 " is recorded wherein information frame, the present invention is not limited in this embodiment in this case, but the information frame of any other type all can be used.
In addition, similarly, make the digitized audio message in the second record area territory 6 carry out above-described management as common CD-ROM form with the information frame in second management area 5.
The example of a more concrete CD-R CD will be described below first embodiment of the pen recorder of data recording to the CD-R CD with aforesaid being used for.
As shown in Figure 6, for example, the pen recorder of this first embodiment is to be applicable to information is recorded pen recorder on the CD-R CD 1 that comprises a plurality of posting fields.It comprises an acoustic processing part 23, is used for the predetermined sampling frequency sound signal of taking a sample from sound source, and the digitized audio message that obtains like this (signal) is converted to the digitized audio message that is suitable for being recorded in the form on the CD-R CD 1; With a recording section 18, be used for the digital audio and video signals of handling in acoustic processing part 23 is recorded the first session section 9 and the second session section 10 of CD-R CD 1.
In addition, as shown in Figure 7, for example, acoustic processing part 23 comprises one first acoustic processing part 16, be used for the predetermined sampling frequency sound signal of from first sound source, taking a sample, and the digitized audio message that quantizes to obtain like this with a predetermined figure place; With one second sound processing section 17, be used for the sampling frequency identical and compressing resulting digital audio and video signals from corresponding to sound signal of sampling second sound source of first sound source with this predetermined sampling frequency.In addition, recording section 18 records the digitized audio messages from the first acoustic processing part 16 in the first record area territory 3 of the first session section 9 and the digitized audio message from the second sound processing section 17 and records in the second record area territory 6 of the second session section 10.
On practical more meaning, first front microphone 12 and second front microphone 13 are microphones of forward path, and first back is microphones of backward channel to the microphone 14 and second back to microphone 15.In this case, what is called comprises that the hyperchannel of a plurality of passages is made up of forward path and backward channel.
Therefore, the sound signal of forward path promptly from the sound signal of two passages of front microphone 12,13, is sent to the first acoustic processing part 16.The first acoustic processing part 16 with for example by the take a sample sound signal of these forward paths of the sampling frequency of the 44.1kHz of CD-DA format specification, thereafter to its equal interval quantizing of carrying out 16 so that data that quantize are delivered in the recording section 18.Recording section 18 the data recording of the quantification that sends like this in the first record area territory 3 of the first session section 9.
The sound signal of backward channel promptly from the sound signal of back to two passages of microphone 14,15, is sent in the second sound processing section 17.The sound signal of these backward channels is taken a sample with by using with the sampling frequency of for example 44.1kHz similarly in the second sound processing section 17, for example ATRAC (adaptive transformation sound encoder) algorithm compresses, thereby by showing that auditory properties carries out 1/5 the size of data that the position is compressed to original data.Recording section 18 this data recording of having compressed in the second record area territory 6 of the second session section 10.
During this time, as mentioned above, wherein pointer part 112 for example is defined by the information frame of " B0 " or " C0 " and information frame that pointer part 112 is defined by " E0 " is recorded in first management area 2, and the information frame that pointer part 112 for example is defined by " D1 " is recorded in second management area 5.
Simultaneously, in traditional CD-DA form, the digitized audio message of four-way is the longest can only to go on record in half the time for common two channel digital audio recording of information times.In contrast, the applied pen recorder of the present invention can improve above-mentioned shortcoming, thereby might realize carrying out the non-volatile recording of the multichannel digitized audio message represented by the digitized audio message of four-way and can reset by a kind of recording medium of the digitized audio message of CD-DA format record.
It should be noted that, in the above explanation relevant with concrete instance (embodiment), differentiation data as expression CD-R CD are recorded in the first session section 9, these differentiation data make can be by the digitized audio message of common CD player playback CD-DA form, and with the sampling frequency is that 44.1kHz digitized audio message sampling and that utilize the ATRAC compression algorithm is recorded in the second session section 10, the pointer part 112 of its first management area 2 is that the information frame of " B0 " or " C0 " and information frame that pointer part 112 is " E0 " are provided, and the pointer part 112 of second management area 5 is that the information frame of " D1 " is provided.But the present invention is not limited to such embodiment.For example, other value can be recorded in the pointer part 112 of pointer part 112 neutralization second management area 5 of first management area 2, so that the differentiation data are provided.
In addition, in the embodiment that describes in the above, when the sound signal of backward channel was compressed by use the ATRAC algorithm in the second sound processing region 17, this sound signal can be not limited only to above-mentioned compression method by using other compression algorithm to be compressed.Further, be used for replacing compression, can adopt a kind of like this method, thereby the sampling that promptly descends is so that reduce the data that figure place realizes quantizing to provide the CD-ROM form.
Second embodiment of the applied pen recorder of the present invention will be described below.
The pen recorder of second embodiment comprises, for example as shown in Figure 8, be used for from sound source, take a sample sound signal and quantize the quantized segment 24 of the digital audio and video signals of gained according to predetermined figure place of predetermined sampling frequency as 23, one of acoustic processing parts; With one be used for the separating part 25 that is separated into the digital audio and video signals of high-order and low level from the digital audio and video signals of quantized segment 24.In addition, recording section 18 records high-order digitized audio message in the first session section 9 of CD-R CD 1, and the digitized audio message of low level is recorded in the second session section 10 of CD-R CD 1.
On practical meaning more, be transported in the quantized segment 24 from the sound signal of first microphone 21 and second microphone 22.Quantized segment 24 is these sound signals of sampling under by the sampling frequency of the 44.1kHz of CD-DA format specification for example, thereafter it is realized 20 equal interval quantizing.In this case, owing to the size of data by the CD-DA format specification is 16, separating part 25 separates the sound signal that has become 16 high positions and 4 low datas through 20 quantifications.
18 16 high position datas separating at separating part 25 of recording section record the first record area territory 3 of the first session section 9,4 low datas are recorded in second directorial area 5 of the second session section 10.
At this moment, as mentioned above, the information frame that its pointer part 112 is defined by being defined by as the information frame of " B0 " or " C0 " and pointer part 112 " E0 " is recorded to first management area 2, and the information frame that pointer part 112 is defined by " D2 " is recorded in second management area 5.
Simultaneously, in traditional CD-DA form, owing to use the digitized audio message that quantizes greater than 16 figure place or size of data can not directly to be recorded on the CD greater than 16 digitized audio message, then to reduce this digital audio and video signals size of data processing with through the data handled like this as the data recording of CD-DA form to CD.In contrast, in using pen recorder of the present invention, has the information that digitized audio message as 20 sizes is divided into 4 of high-order 16 and low levels, and the digitized audio message of size of data with 16 of high order ends with the CD-DA format record in first record area territory 3, and 4 digitized audio message of remaining low order end recorded in the second record area territory 6, therefore the 20 bit digital audio information recordings that might increase figure place are to the CD-R CD.In addition, might from the CD-R CD that writes down by this way, reset with the digitized audio message of CD-DA format record by using common CD player.
It should be noted that, the explanation here is that such concrete instance (embodiment) is carried out, promptly, differentiation data as expression CD-R CD, the digitized audio message that makes its figure place increase is separated into high-order and digitized audio message low level, so that separately digitized audio message is recorded in first record area territory 3 and the second record area territory 6, the pointer part of its first management area 2 is that the message unit and the pointer part of " B0 " or " C0 " is that the information frame of " E0 " is provided, and the pointer part 112 of second management area 5 is that the information frame of " D2 " is provided.The present invention is not limited to this embodiment.For example, other numerical value can be recorded in the pointer part 112 of pointer part 112 neutralization second management area 5 of first management area 2 so that the differentiation data are provided.
In addition, among the described embodiment, be separated into the method for high-order and low level in the above, adopted and be separated into high-order 16 examples with 4 of low levels simply as a digitized audio message that figure place has been increased.The present invention is not limited to this embodiment.For example, the data of high order end can be the data that obtain according to the digitized audio message that figure place has increased, and the data of low order end can be the data that the data according to remainder obtain.
The structure of example of a distortion that is suitable for writing down the pen recorder of the digitized audio message that the figure place that is in the state that is separated into high-order and low level increased is displayed among Fig. 9.
In the pen recorder of the example of this distortion, for replacing the output of quantized segment 24, the digitized audio message that employing obtains by playback master tape 30 is writing down with the sampling frequency digitized audio message that to be 44.1kHz sampling back get greater than 16 data-measuring by figure place on this master tape.In addition, be used for the management information supposition that the digitized audio message to record manages and write above-mentioned master tape 30.
Further, in this pen recorder, high-order data, the data supposition that for example will be recorded in 16 of high positions on the CD-R CD 1 is to obtain by the size of data from master tape 30 digitized audio messages is reduced to 16 bit data at noise shaped portion 31 or dither (dither) circuit part 32, and the data of its low level then are to ask in the poor calculating section 35 asking difference and the result that obtains from the digitized audio message of master tape 30 with from the output of noise shaped portion 31 or high-frequency impulse circuit part 32 at one.
That is to say, noise shaped portion 31 is realized the what is called from the digitized audio message of master tape 30 is crossed sampling (oversampling) according to auditory properties, therefore that end of high frequency band that the frequecy characteristic of noise is moved to poor sensitivity to be reducing quantization noise, and becomes 16 digitized audio message (occasion at needs abbreviates 16 bit data as hereinafter) greater than 16 digitized audio message by figure place by the algorithm that the so-called sign bit of use shines upon (sign bit mapping).Then, noise shaped portion 31 is transported to management information to this 16 bit data and produces part 42, and by one 16 bit data path 33 it is transported to music CD format converting part 36 and asks poor calculating section 35.
On the other hand, dither circuit part 32 is in the digitized audio message that is added to less than the so-called dithers of the random noise of a quantization step from master tape 30, and size of data is surpassed 16 data-switching becomes 16 bit data.For example, in the data of conversion with 20 quantized level quantification, promptly 20 bit data convert in the process of 16 bit data, because the step-length of 20 quantized levels is less than a quantization step with 16 quantized levels, thus between certain quantization step of 16, scatters (distributions) data statistics distribution (distribution) before and on 16 the quantized level afterwards with the attenuating quantization noise.Then, dither circuit part 32 is transported to management information to this 16 bit data and produces part 42, and by 16 bit data paths 33 it is transported to and asks in poor calculating section 35 and the music CD format converting part 36.
Correction of timing storer 36 is storing from the figure place of master tape 30 digitized audio message greater than 16 temporarily, and is transported to the timing of asking poor calculating section 35 with the corresponding data that transmits from noise shaped portion 31 or dither circuit part 32 and synchronously the digital audio and video signals of storage is transported to and asks the poor calculating section 35.
Ask 35 pairs of poor calculating sections to ask difference operation greater than 16 data and the difference data that obtains like this is transported in the mixing portion 39 from 16 bit data of noise shaped portion 31 or dither circuit 32 with from the size of correction of timing storer 34.
Mixing portion 39 is carrying the address date of coming from address date output 37 and mixing from the difference data of asking poor calculating section 35 to produce one group of data, i.e. data of Hun Heing.It should be noted that address date is represented the address of 16 bit data on CD-R CD 1 corresponding to this difference data, and be used in the following replay device that will describe with the mode of phase mutually synchronization reset this difference data and 16 bit data.Then, the data of mixing are transported in the internal storage 41, and are stored in wherein provisionally.
On the other hand, music CD format converting part 36 converts 16 bit data to by the CD-DA format specification data, and by a selector switch (switching) switch 40 the music CD formatted data of gained is transported in an EFM (eight to the 14 modulation) part 45.
In addition, 38 blended datas that are stored in the internal storage 41 of CD-ROM format converting part convert the data by the CD-ROM format specification to, and by this selector switch 40 the CD-ROM formatted data of gained are transported in the EFM part 45.
Management information produces part 42 and comprises register, and is used to form the management data that will be recorded in the management information first management area 2 or second management area 5 and it is stored in this register temporarily according to resetting from master tape 30 and producing from the management information of noise shaped portion 31 or 32 outputs of dither circuit part.In addition, 42 management datas that are stored in the register of management information generation part are transported in the EFM part 45 by selector switch 40.As after want to describe, first management data that is recorded in first management area 2 is output to after the EFM part 45, second management data that is recorded in second management area 5 is generated, and second management data that is produced is stored in the register.
Draw for one and produce part 43 and produce and be recorded in first and draw zone 4 and second and draw drawing data and it is outputed in the EFM part 45 in the zone 7 by selector switch 40.
The switching manipulation of control section 44 control selector switches 40.In this case, the data that are recorded in CD-R CD 1 are according on the internal layer circumferential edge, and with first management area 2,4, the second management areas 5, zone are drawn in first record area territory 3, the first, and second record area territory 6 and second is drawn the order in zone 7 and carried out.
Therefore, control section 44 switches selector switch 40 according to the order that is recorded in the CD-R CD 1, like this so that the output of management information generation part 42 is selected in the time of start-of-record, so that first management data is transported in the EFM part 45, thereby in turn switch selector switch 40 so that the selected handle of output of music CD format converting part 36 is with will being recorded in music CD formatted data in the first record area territory 3 based on being transported in real time in the EFM part 45, and it is selected to draw first in the zone 4 and draw data delivery in EFM part 45 being recorded in first so that draw the output that produces part 43 to switch selector switch 40 further.Further, control section 44 is delivered to EFM part 45 to the data that will be recorded in the first session section 9, carry out then together for the data that will be recorded in the second session section 10, produce part 42 according to management information, CD-ROM format converting part 38 and draw the control that the order that produces part 43 is switched selector switch 40, with the data delivery of gained in EFM part 45.In this example, CD-ROM format converting part 38 is worked like this, by selector switch 40 when selected, CD-ROM format converting part 38 is taken out the data that are stored in the internal storage 41 and the data that it converts the CD-ROM form to is exported it then with its output of box lunch.
EFM part 45 utilizes EFM (eight to 14 modulation) algorithm modulation to carry the data of coming from each circuit part by selector switch 40, EFM is a modulating system that is applied in the CD system, in order to input data-switching is wherein become to be suitable for writing CD-R CD 1 and it is outputed to the data of a laser diode 46.
Laser diode 46 is one and is used for the recording light source on from the data recording of EFM part 45 output to CD-R CD 1, and its data goes out the enterprising line item of recording surface that surface that these recording laser bundles of recording laser Shu Bingrang project the CD-R CD provides from the data transmission of EFM part 45.
It should be noted that, as shown in Figure 10, for example, a test section 48 can further be provided, be used in this test section 48, detecting music CD formatted data and CD-ROM formatted data data volume separately, differentiating according to testing result in the second record area territory 6 that the CD-ROM formatted data will write in the back whether inadequate phenomenon has taken place, thereby make control section 51 in running order according to differentiating the result.
That is to say, differentiating the result is a signal that produces in this case, promptly the process that is recorded to the first record area territory when music CD formatted data is still when continuing, and being used for writing down the possibility that the second record area territory 6 corresponding to the CD-ROM formatted data of music CD formatted data may become not enough can take place.This signal is transported to control section 51.Then, control section 51 is controlled selector switch 40 according to this signal.In addition, this differentiation result is transported to a warning display part 40 so that it can realize the mandatory termination that warning shows to the record in first record area territory.
In addition, as shown in Figure 11, for example, can adopt a kind of structure, a time code output 52 is provided in this structure, be used for the output time code so that link 16 bit data with the similar difference data of address date; With a time code data-switching part 53, be used for being used for it is comprised the second record area territory 6 of the data recording of time code information to CD-R CD 1 with the data of mixing mutually from the difference data of asking poor calculating section 35 with handle converting to from the time code of time code output 52.
That is to say that in Figure 11, music CD format converting part 55 will convert music CD formatted data to from 16 figure places that noise shaped portion 31 or dither circuit part 32 transmit by 16 bit data passage .33.Then, allow this music CD formatted data experience EFM.The data of gained are recorded each zone of the first session section 9 by use such as the recording light source of laser diode.
On the other hand, mixing portion 54 is from the difference data of asking poor calculating section 35, mixes then from the time code data of time code data-switching part 53 with from the address date of address date output 37 blended data of gained is transported in the CD-ROM format converting part 56.CD-ROM format converting part 56 converts this blended data to the CD-ROM formatted data.Allow the CD-ROM formatted data of gained handle through EFM then, the data after the modulation are by using each zone that is recorded to the second session section 10 as the recording light source of laser diode like this.
In addition, in pen recorder shown in Figure 11, with the record of 55 pairs first session sections 9 of music CD format converting part and with the record of 56 pairs second session sections 10 of CD-ROM format converting part all by using separately independently record-header to realize.Therefore, the internal storage that provides of the pen recorder that shows in Fig. 9 and Figure 10 becomes and there is no need.In this pen recorder, be delivered directly in the CD-ROM format converting part 56 from the blended data of mixing portion 54.
It should be noted that, in the pen recorder of Fig. 9 and Figure 10 demonstration, be used for exporting the circuit part of the data relevant, resemble the time code output 52 in the pen recorder shown in Figure 11, can be used to a time code data and output in the mixing portion 39 with time code.In other words, in pen recorder shown in Figure 11, similar with Fig. 9 and pen recorder shown in Figure 10, single record-header can be used to time code etc. is recorded in the second record area territory 6.
The 3rd embodiment that uses pen recorder of the present invention will be described below.
The pen recorder of the 3rd embodiment comprises: for example, as shown in figure 12, quantized segment 24 is used for take a sample from a sound source sound signal and quantize the digitized audio message of gained with predetermined figure place of predetermined sampling frequency; With one (frequently) band partitioning portion 61, the frequency that is used for the 1/n (n is an integer) with this predetermined sampling frequency is with cutting apart digitized audio message from quantized segment 24 so that realize being divided into two groups.In this case, recording section 18 records the digitized audio message of a group in two groups in the first session section 9 of CD-R dish 1, the digitized audio message of another group is recorded in the second session section 10 of CD-R CD 1.
On meaning more specifically, be transported to quantized segment 24 from the sound signal of first wheat left side wind 21 and second microphone 22.Quantized segment 24 is with sampling frequency 88.2kHz these sound signals of taking a sample for example, and this frequency is higher than the sampling frequency by CD-DA format specification (appointment), thereby it is realized 20 equal interval quantizing.In this case, the size of data by the CD-DA format specification is 16 that take a sample with sampling frequency 44.1kHz.In addition, effective (working) signal content in the digitized audio message of the predetermined sampling frequency sampling by is at the signal content of low-frequency band one side with respect to half frequency of this sampling frequency.
According to top description, band partitioning portion 61 comprises, for example allow frequency less than the signal content of 22kHz from the low-pass filter that wherein passes through with allow to allow the bandpass filter of the signal content of frequency between 22kHz～44kHz from wherein passing through.It is that the frequency of digitized audio message of 88.2kHz sampling is transported in the frequency characteristic conversion portion 62 less than the signal content of 22kHz and this signal content that this low-pass filter of these band partitioning portion 61 usefulness takes out with the sampling frequency, and with this bandpass filter take out frequency between 22kHz～44kHz signal content and this signal content be transported to one compress in the processing section 63.
Frequency characteristic conversion portion 62 further is that 44.1kHz sampling frequency band is reduced to 16 size of data to 20 size of data up to the signal content of 22kHz with the algorithm by all sign bit mappings as mentioned above with the sampling frequency, thereby it is transported in the recording section 18.By this method, just can obtain data, promptly be 44.1kHz sampling and be the data of 16 quantifications with figure place with the sampling frequency by CD-DA format specification (appointment).
On the other hand, compression processing section 63 is that original 1/5 data are to be transported to it in the recording section 18 by using for example aforesaid ATRAC algorithm that frequency band is compressed into size of data as the signal content of 22kHz～44kHz substantially.
Recording section 18 is then it being recorded in the second record area territory 6 of the second session section 10 of CD-R CD 1 with the data that the packed data from compression processing section 63 converted to the CD-ROM form in the first record area territory 3 of the first session section 9 of CD-R CD 1 from the data recording of frequency characteristic conversion portion 62.
At this moment, as mentioned above, pointer part 112 is defined as the information frame of " B0 " or " C0 " and information frame that pointer part 112 is defined as " E0 " is recorded in first management area 2, and wherein for example pointer part 112 information frame that is defined as " D3 " be recorded in second management area 5.
Simultaneously, under the situation of traditional CD-DA form, can not directly realize to be higher than the digitized audio message record of 44.1kHz sampling frequency sampling.On the contrary, under the situation of the applied pen recorder of the present invention, might prepare (production) a kind of CD-R CD, in this CD, the digitized audio message of the CD-DA form that its figure place has reduced is recorded to the first record area territory, it is to be that the signal content of low-frequency band side of the digitized audio message of 88.2kHz sampling reaches with the sampling frequency by the sampling that descends that this figure place reduces, and the digitized audio message that the signal content by compression high frequency band edge is obtained records in the second record area territory 6.In addition, might use common CD player from the CD-R CD of such record, to reset by the digitized audio message of CD-DA format record.
In addition, in traditional CD-DA form, can not directly realize using figure place greater than the digitized audio message of 16 quantifications or the record of the digitized audio message of size of data above 16.On the contrary, in the pen recorder of third embodiment of the invention, having adopted a kind of method to come for example size of data is 20 the digitized audio message digitized audio message that is divided into the digitized audio message of low frequency band edge and high frequency band edge to compress the reduction of the figure place of the digitized audio message of low frequency band edge and to the digitized audio message of high frequency band edge by sign bit mapping etc., therefore, be similar to second pen recorder among the embodiment, might realize the digitized audio message that a kind of capable record figure place has increased, and have the ability by using common CD player to reset with the recording medium of the digitized audio message of CD-DA format record.
It should be noted that, in the explanation of the above example that provides, differentiation data as expression CD-R CD, in this CD-R CD, the digitized audio message that has experienced after the height sampling (high-sampling) that so-called sampling frequency is higher than 44.1kHz is cut apart by band with predetermined frequency, therefore the data of the low frequency band edge of gained are being recorded to first record area territory 3 after with the sampling frequency being 44.1kHz decline sampling, the data of high frequency band edge are being recorded in the second record area territory 6 after using the ATRAC compression algorithm, pointer part 112 in first management area 2 is provided for the information frame of " B0 " or " C0 " and pointer part 112 information frame for " E0 ", and the pointer part in second management area 5 112 is provided for the information frame of " D3 ".Yet the present invention is not limited to this concrete example.For example, other numerical value can be recorded in the pointer part 112 of the pointer part 112 of first management area 2 and second management area 5 so that the differentiation data are provided.
In addition, when the signal content of the above embodiments medium-high frequency band edge in compression processing section 63 when using the ATRAC algorithm to be compressed, the present invention is not limited to this embodiment, any other compression algorithm all can be used to realize this compression.Further, the sampling that can descend replaces compression with the reduction figure place and realizes quantizing, thereby the data of CD-ROM form are provided.
First embodiment of replay device used in the present invention is described below.
Replay device among first embodiment is meant the replay device that is suitable for playback digitized audio message from CD-R CD 1, and is for example shown in Figure 1, and this CD-R dish 1 comprises: digitized audio message is recorded first record area territory 3 wherein; Record first management area 2 that is used for realizing information that the digitized audio message that is recorded in the first record area territory is managed; Record second record area territory 6 corresponding to the digitized audio message that is recorded in the digitized audio message in the first record area territory 3; With record second management area 5 that is used for realizing information that the digitized audio message that is recorded in second record area territory 6 is managed.As shown in Figure 13, this replay device also comprises, optical pickup apparatus 70 and one are used for from the signal processing 71 of CD-R CD 1 playback digitized audio message; A first memory 72 that is used for storing the digitized audio message that reads from first record area territory 3 by light picker 70; A second memory 73 that is used for storing the digitized audio message that reads from second record area territory 6 by light picker 70; One is used for differentiating the first differentiation the part 74 whether data volume that is stored in the first memory 72 meets or exceeds a predetermined amount; One is used for differentiating the second differentiation the part 75 whether data volume that is stored in the second memory 73 meets or exceeds a predetermined amount; A servo circuit part 77 that is used for mobile light picker 70; With one be used for carrying out a control light picker 70 is moved to second record area territory 6 and the digitized audio message that reads is stored into control section 76 in the storer 73 from second record area territory 6 according to the information of first management area 2, determining the data volume that is stored in the second memory 73 thus in the second differentiation part 75 is equal to or greater than under the situation of predetermined amount, control section 76 is controlled light picker 70 is moved on to the first record area territory 3 that records the digitized audio message corresponding with the digitized audio message that is stored in second record storage 73, and the digitized audio message read from first record area territory 3 is stored in the first memory 72 export synchronously with one another then from the digitized audio message in first memory 72 and the second memory 73.
In this case, as mentioned above, CD-R CD 1 is the CD of session section more than (type), so that the data of CD-DA form are recorded in the first session section that comprises first management area 2 and first record area territory 3, the data of CD-ROM form are recorded in the second session section 10 that comprises second management area 5 and second record area territory 6 like this.
In operating process, light picker 70 also is transported to the replay signal of gained the signal processing 71 from CD-R CD 1 sense data.In addition, light picker 70 provides access to first record area territory 3 or second record area territory 6 according to a servo-control signal from the following servo circuit part 77 that will describe.In this case, the access time from access time of the first session section, 9 to the second session sections 10 of CD-R CD 1 and light picker 70 from the second session section, 10 to first session sections 9 is for example 1 second.
Signal processing 71 is extracted expression from first management area 2 or the differentiation data of the type (kind) of the CD-R CD 1 that obtains of second management area 5 and it is transported to control section 76 from replay signal.Then, control section 76 is according to this judgment signal control signal processing section 71, or the like.On meaning more specifically, signal processing 71 is carried out signal Processing to the replay signal of reading from the first session section 9 with the CD-DA form and the digitized audio message that obtains thus is transported to the first memory 72 under the control of control section 76, and the replay signal that the second session section 10 is read is realized that a predetermined signal processing also is transported to the digitized audio message that obtains thus in the second memory 73.
For example, under by the CD-R CD 1 quilt situation of resetting of the recording device records among first embodiment, see following description, the CD-R CD that to be reset is the CD that comprises the second session section 10, the data that wherein are recorded in the second record area territory 6 are to use the compressed data of ATRAC algorithm, and its pointer part 112 is that the information frame of " B0 " or " C0 " is recorded in first management area 2 and pointer part 112 is that the information frame of " D1 " is recorded in second management area 5.When signal processing 71 detected these information frames, its was being used for the differentiation data delivery of discriminant information frame in control section 76.Control section 76 utilizes one to come control signal processing section 71 corresponding to the control signal of these differentiation data, and signal processing 71 decompresses (expand) corresponding to the data in second record area territory 6 and the digitized audio message of gained is transported in the second memory 73.
First memory 72 temporary transient storages are carried the digitized audio message corresponding to first record area territory 3 of coming from signal processing 71.In addition, this first memory 72 is differentiated the data delivery to the first of the expression storage data volume that obtains like this in the part 74, and then it is transported in the playback output 79 according to reading the digitized audio message that is stored in wherein from the storer control signal of control section 76.In addition, second memory 73 is temporarily stored from the digitized audio message of signal processing 71 corresponding to second record area territory 6.Further, be similar to the way of first memory 72, second memory 73 is differentiated the data delivery to the second of the expression storage data volume that obtains like this in the part 75, and then it is transported in the playback output 79 according to the digitized audio message of reading wherein storage from the storer control signal of control section 76.
That is to say, whether the storage data volume that the first differentiation part 74 is differentiated first memory 72 according to expression from the data of the storage data volume of first memory 72 reaches a predetermined numerical value, for example, allow the quantity of storage, so that expression is differentiated result's differentiation data delivery in control section 76.Similarly, whether the storage data bulk that the second differentiation part 75 is differentiated second memory 73 according to expression from the data of the storage data volume of second memory 73 reaches a predetermined quantity, for example, allow the quantity of storage, so that expression is differentiated result's differentiation data delivery in control section 76.It should be noted that first and second differentiate parts 74,75th in this example, be independent of that first and second storeies 72,73 are provided, but these parts can also provide in corresponding memory 72,73 or in control section 76.
Below will be to process flow diagram shown in Figure 14, in conjunction with the operation of the replay device of first embodiment, promptly use playback method of the present invention, give an explaination.
Use playback method of the present invention and be a kind of playback method that is used for from recording medium playback digitized audio message, this recording medium comprises: the first record area territory 3 that records digitized audio message; Record first management area 2 of the information that the digitized audio message that is recorded in first record area territory 3 is managed; Record second record area territory 6 corresponding to the digitized audio message of the digitized audio message that is recorded in first record area territory 3; Second management area 5 with the promising information that the digitized audio message that is recorded in second record area territory 6 is managed of record.As shown in figure 14, this method comprises: step S1, and whether S2 reads the information of first management area 2, exist to differentiate second record area territory 6 according to the management information that is read; Step S6 when at step S1, determines among the S2 under the situation of second record area territory 6 existence, allows light picker 70 move in second management area 5; Step S12, S13 and S14 read information in second management area 5 by the light picker 70 that moves, to read the digitized audio message in the second record area territory 6 according to the information of being read in step S6; And a digitized audio message that reads stores in the first memory 72; Step S15, light picker 70 is moved to data recording position in the first record area territory 3, and the corresponding digitized audio message of the digitized audio message from second record area territory 6 that is stored in the S14 at step S12 in the first memory 72 at this location records; With step S16, S17, the digitized audio message of reading first record area territory 3 by the light picker 70 that moves in step S15 to be to store the digitized audio message of being read in the second memory 73 into, and output is stored in digitized audio message in first memory 72 and the second memory 73 synchronously with one another then.
Further, this playback method comprises: step S18 compares memory space and a predetermined numerical value of second memory; Step S20, when the stored number that determines second memory in step S18 is equal to or greater than under the situation of this predetermined numerical value, take a course of work that light picker 70 is moved to data recording device in the second record area territory 6, on this position, record and be stored in digitized audio message in the first memory 72 the join digitized audio message of (continuously) and reading number audio-frequency information; Step S21, S22, digitized audio message in the second record area territory 6 of reading in step S20 is stored in the first memory 72, keep exporting synchronously with one another digitized audio message that is stored in the first memory 72 and the digitized audio message that is stored in the second memory 73 then.
In this playback method, at step S0 place, the replay operations of CD-R CD 1 is started.At step S1 place, light picker 70 provides access to first management area 2 with playback information.That is to say that control section 76 is transported to a servo circuit control signal in the servo circuit part 77 to control the accessing operation of light picker 70.
At step S2 place, it is to be judged to other in control section 76 that its data P0 shown in Figure 5 carries the management information (hereinafter being called first management information) of coming for whether the information frame of " B0 " is present in from light picker 70.Whether that is to say, be that the CD of many sessions section is differentiated out by the CD reset.Differentiating the result is "No", and promptly the CD of being reset is that processing procedure enters step S3 under the situation of CD of single session section.Thereby this replay device carries out the playback of normal optical disk is handled.
On the other hand, differentiating the result in step S2 is "Yes", and promptly to be determined be under the situation of many sessions section CD to the CD of being reset, and processing procedure enters step S4.Whether data P0 is present in first management information in turn to be come out by differentiation in control section 76 for the information frame of " E0 ".Differentiating the result when this is "No", promptly being differentiated out by the CD reset has only character data to be recorded in CD in second management area 5 of the second session section 10, and data are recorded in the absence in the second record area territory 6, and processing procedure enters step S5.Thereby this replay device is realized the playback procedure to the CD of so-called tape character.
In addition, differentiating the result in step S4 is "Yes", and promptly to be determined be under the situation of CD-R CD to the CD of being reset, and processing procedure proceeds to step S6.Thereby the address information that light picker 70 bases are represented in first management information provides the access to second management area 5.That is to say, control section 76 a servo circuit signal conveys in servo circuit part 77 in case control light picker 70 accessing operation.
At step S7 place, light picker 70 is realized the playback of second management area 5.Then, processing procedure enters step S8.
In step S8, control section 76 stores the data content in second management area 5 (hereinafter calling second management information) in the internal storage into.Then, processing procedure proceeds to step S9.Therefore, replay device is placed in order input waiting status, and once is being in no mode of operation.
When step S10, when control section 76 had determined the instruction input, processing procedure proceeded to step S11.Therefore, control section 76 sends temporarily and stops.Then, processing procedure enters step S12.
When step S12, control section 76 is transported to the servo circuit control signal in the servo circuit control section 77 according to the address information of second management information.Light picker 70 is provided to the access in second record area territory 6.
When step S13,71 pairs of CD-ROM forms by the second record area territory 6 of CD-ROM standard recording of signal processing carry out scrambling and discharge processing (scramble release processing) and CD-ROM processing, as error correction or address process or the like.That is to say that control section 76 is being used for allowing its control information of handling to deliver in the signal processing 71.
At step S14, the replay data that second memory 13 is accepted by the acquisition of CD-ROM processing procedure.That is to say that control section 76 is transported in the signal processing 71 and the storer control signal is transported in the second memory 73 to processing control signals.
At step S15, the address that light picker 70 is recorded according to the digitized audio message corresponding with the replay data of sending into second memory 73 provides the access to first record area territory 3.That is to say that control section 76 is transported to the servo circuit control signal in the servo circuit part 77 to control the accessing operation of light picker 70.
When step S16, light picker 70 is from being reset out replay data and export it in the first record area territory 3 of access among step S15.Further, first memory 72 is taken into this replay data.That is to say that control section 76 is transported to the processing control signals that is used for allowing to handle in the signal processing 71, and the storer control signal is transported in the first memory 72.
When step S17, first memory 72 and second memory 73 are read the digitized audio message that is stored in wherein by predetermined data volume and they are transported in the playback output 79.79 mixing of playback output flow to its digitized audio message and export this information.That is to say that control section 76 is transported to the storer control signal in first memory 72 and the second memory 73, and the playback control signal is transported in the playback output 79.It should be noted that, this time interim, the replay data that obtains by playback first record area territory also is distributed to the first memory 72 from signal processing part, and is stored in wherein.
When step S18, control section 76 is differentiated the memory data output whether first memory 72 reaches permission.Differentiating the result when this is "No", promptly determines when still having vacant zone to exist in first memory 72, and processing procedure enters step S19.
When step S19, the playback that light picker 70 continues first record area territory 3, the replay data of part 70 is picked up in first memory 72 storages from light.That is to say, control section 76 is transported to the accessing operation of servo circuit part 77 with control light picker 70 to a servo circuit control signal, and a processing control signals is transported in the signal processing 71, and a storer control signal is transported in the first memory 72.Then, processing procedure is got back among the step S17.
On the other hand, when the differentiation result in step S18 is a "Yes", promptly control section 76 determines first memory 72 when having reached the memory data output of permission, and processing procedure enters step S20.
At step S20, light picker 70 provides the access of the continuous address in second record area territory 6 and these data of resetting.That is to say that control section 76 is transported to a servo circuit control signal in the servo circuit part 77 to control the accessing operation of light picker 70.
When step S21, second memory 73 is taken into the replay data in the second record area territory 6 of resetting by light picker 70 in step S20.That is to say that control section 76 is transported to a processing control signals in the signal processing 71 and a storer control signal and is transported in the second memory 73.
At step S22, first memory 72 and second memory 73 are read by the digitized audio message of predetermined data volume storage and them and are transported in the playback output 79.Playback output 79 mixes to be carried the digitized audio message of coming and exports this information.Then, control section 76 is transported to the storer control signal in first memory 72 and the second memory 73, and a playback control signal is transported in the playback output 79.It should be noted that,, also delivered to the second memory 73 by the replay data that playback second record area territory 6 obtains, and be stored in wherein from signal processing 71 in this period.
At step S23, control section 76 is differentiated the data storage quantity whether second memory 73 reaches permission.Differentiating the result when this is "No", promptly determines when still having vacant zone to exist in second memory 73, and processing procedure is got back to step S21.On the contrary, be "Yes" when differentiating the result, promptly determine storer 73 when having reached the data storage quantity of permission, processing procedure enters step S24.
At step S24, light picker 70 provides access to the continuation address in first record area territory 3 with replay data.That is to say that control section 76 is transported to the servo circuit control signal in the servo circuit part 77 to control the accessing operation of light picker 70.
At step S25, differentiate the playback in part 76 differentiation first record area territories 3 and whether finish, or whether the instruction of shut-down operation input provides.Differentiating the result when this is "No", promptly determines the digitized audio message that existences also do not reset in first record area territory 3 and determine also not to be used for the instruction of shut-down operation when importing, and processing procedure enters step S26.
When step S26, the playback that light picker 70 continues first record area territory 3, first memory 72 storages are from the replay data of light picker 70.That is to say, control section 76 is transported to a servo circuit control signal in the servo circuit part 77 to control the accessing operation of light picker 70, and processing control signals is transported to signal processing 71, and the storer control signal is transported in the first memory 72.Then, processing procedure turns back to step S17.
On the other hand, be "Yes" differentiating the result, the playback that promptly determines the digitized audio message in first record area territory 3 is finished, or is used under the situation that the instruction input of shut-down operation provided, and processing procedure enters step S27.Therefore, this replay device is finished replay operations.
It should be noted that, in step S17 and step S22, under time code is added to situation with the CD-R CD in the second record area territory 6 of CD-ROM form, obtain from the replay data of first memory 72 with from the replay data of second memory 73 even without adopting by timing method with mutual correspondence, the data that still have first memory 72 and second memory 73 at one time in (concurrently) be read out, therefore, so just might be with the mode outputting digital audio information of phase mutually synchronization.
In playback method as shown in figure 14, the data that deposited this storer in for temporary transient taking-up are the data writing rate of writing data into memory necessary conditions greater than the data read rate with output data from this storer.
In view of above-mentioned, being necessary to make the speed that digitized audio message is write first memory 72 to be higher than from first memory reads the speed of digitized audio message and makes the speed that digitized audio message is write second memory 73 be higher than the speed that reads digitized audio message from second memory.
About the writing rate relevant and read rate with first memory 72 and with second memory 73 relevant writing rate and read rate, to be that example is made explanations by the playback method with the CD-R CD that is used for resetting below, the CD-DA formatted data be recorded in 3 neutralizations of first record area territory and be recorded in the second record area territory 6 by the compressed data of using the ATRAC compression algorithm on this CD-R CD.
The data read rate of the playback time of stipulating in common CD system is 1.4112 megabit per seconds.In addition, be essentially 1/5 of original size of data because the compressed data of the compression algorithm by aforesaid ATRAC are compressed, then the read rate from the packed data of second memory 73 is 0.2822 (=1.4112 * (1/5)) megabit per second.
In order to satisfy aforesaid condition, owing to be used for being taken into the digitized audio message in first record area territory 3 and be 1.4112 (megabit per seconds), then be necessary to make the data writing rate that data are write first memory 72 to be equal to, or greater than 1.4112 (megabit per seconds) from the reading speed of first memory 72 reading of data at playback time.In addition, are 282.2 (=1.4112 (megabit per seconds) * (1/5)) kbps owing to be used to be taken into the digitized audio message in second record area territory 6 in the playback of carrying out with the synchronous mode of the digitized audio message that is recorded in first record area territory 3 from the read rate of second memory 73 reading of data, are necessary to allow the data writing rate that data are write second memory 73 be equal to, or greater than 282.2 kbps.
Following explanation is based on such prerequisite, promptly data are write (about) the data writing rate (hereinafter calling first writing rate where necessary) of first memory 72 is 4 times of data read rate (hereinafter calling first read rate in case of necessity) that data are read from first memory 72, i.e. 5.6448 (mbit/), and data are write (about) the data writing rate (hereinafter calling second writing rate in case of necessity) of second memory 73 is 20 times of data read rate (hereinafter calling second reading speed in case of necessity) that data are read from second memory 72, i.e. 5.6448 (mbit/).
First memory 72 storages are from address A 0Rise and to store data successively, for example, shown in Figure 15 A, and repeat this storage operation with certain cycle.Second memory 73 is similar to first memory 72, from address A 0Rise and to store data successively, for example, shown in Figure 15 B, and repeat this storage operation with certain frequency.It should be noted that it is 16.38 megabits that the permission stored number of the data of first memory 72 and second memory 73 is established (supposition) respectively.
In addition, write vector W 1Be defined as representing data from A 0Rise and write the direction of first memory 72 and the vector of address successively.Further, read vector R 1Be defined as representing from first memory 72 from address A 0The vector of the direction of read data and address in order.Further, about second memory 73, write vector W 2With read vector R 2Be defined with top similar mode.In addition, when the capacity of storer is m, the speed of writing data into memory be speed that w and data are read from storer be r (w＞r), the needed time T of data storage quantity that reaches permission up to storer can usually be showed by following formula (1),
T＝m/(w-r) (1)
According to following formula (1), first memory 72 reaches the needed time T of data storage quantity of permission 1Be 3.8690 (=16.38/ (5.6448-1.4112)) seconds, promptly be approximately 3.9 seconds.On the other hand, reach the needed time T of data storage quantity of permission up to second memory 73 2Be 3.0545 (=16.38/ (5.6448-0.2822)) seconds, promptly be approximately 3.1 seconds.
In addition, because first writing rate is 4 times of first read rate, second writing rate is 20 times of second reading speed, writes vector W 1(advancing) speed that moves be to read vector R 14 times of (advancing) speed that moves, write vector W 2Translational speed be to read vector R 220 times of translational speed.
Be used for taking out digitized audio message and their sequential of resetting is presented at the time diagram of Figure 16 with model form from each posting field.
In this time diagram, after the data of control section 76 acceptance first management area 2 in the replay device that reset beginning and Figure 13 show and the data of second management area 5, light pick-up part 70 is from time t 0To time t 1The time interval in provide access according to the data of second management area 5 from first record area territory 3 to second record area territory 6.
From time t 1To time t 2The time interval 11 in, be written in the second memory 73 from the replay data in second record area territory 6.From time t 2To time t 3The time interval in, light picks up part 70 and provides the access from second record area territory 6 to first record area territory 3.
In addition, from time t 3To time t 4The time interval 12 in, be written in the first memory 72 from the replay data in first record area territory 3.From time t 4To time t 5The time interval in, light picks up part 70 access from first record area territory 3 to second record area territory 6 is provided.
From time t 5To time t 6The time interval 13 in, be written in the second memory 73 from the replay data in second record area territory 6.From time t 6To time t 7The time interval in, light picks up part 70 access from second record area territory 6 to first record area territory 3 is provided.
In addition, from time t 7To time t 8The time interval 14 in, write in the first memory 72 from the replay data in first record area territory 3.From time t 8To time t 9The time interval in, light picks up part 70 access from first record area territory 3 to second record area territory 6 is provided.
In this example, suppose that replay operations is at time t 1In time, begin, and replay data is actually at time t 3In time, be output.
Further, as mentioned above, the access time between first record area territory 3 and second record area territory 6 is 1 second.
Further, time interval l 1Be for example 0.3 second, at this time interval l 1Middle data are sent into the second memory 73 from second record area territory 6.In addition, owing to write vector W 2Speed be to read vector R 220 times of speed, the replay data in 6 (=0.3 * 20) second is sent in the second memory 73.That is to say, from time t 2In 6 seconds of beginning, there is no need data are delivered in the second memory 73 from second record area territory 6.
Time interval l 2Be at time interval l 5Promptly, 1.3 (=begin after 0.3+1) second.In addition, as the above, first memory 72 reaches the needed time T of stored digital quantity of permission 1It is 3.9 seconds.At this time interval l 2In, data are delivered in the second memory 72 from first record area territory 3.Further, owing to write vector W 1Speed be to read vector R 14 times of speed, the replay data of 15.6 (=3.9 * 4) second is admitted in the first memory 72.At this moment, owing to be from aforesaid time interval l from the output of the replay data of first memory 72 2Zero-time the time begin, 11.7 (=15.6-3.9) second replay data is when data are admitted to, promptly at time t 4The time, still be retained in the first memory 72.
Time interval l 3Be from time t 3Through time interval l 6Afterwards, that is, 4.9 (=begin 3.9+1) second the time.In addition, as mentioned above, second memory 73 reaches the needed time T of data storage quantity of permission 2It is 3.1 seconds.At this time interval l 3In, data are sent to the second memory 73 from second record area territory 6.In this case, from before having stopped data being taken into the moment t of second memory 73 2Count, data are taken into the moment t that second memory 73 began 1 second time 5Passed through 5.9 (=1+4.9) second, this be with 1 second with time interval l 6Promptly 4.9 (=3.9+1) second addition obtains since the time of this cost be less than above-mentioned 6 seconds, at this time interval l 6It is empty that interior second memory 73 cannot become.It should be noted that the replay data of 62 (=3.1 * 20) second is at time interval l 3In be admitted in the second memory 73, but because the data read operation is still continuing, 58.9 (=62-3.1) second replay data is sent into when being done in data, promptly at time l 6The time, still be retained in the second memory 73.
In addition, at time interval l 4In, carry out such operation, promptly once send into from 3.9 seconds the data in first record area territory 3 in the first memory 72 and secondary output from 15.6 seconds data of first memory 72.That is to say time interval l 4Be 35.1 (=15.6+15.6+3.9) second.In this case, data are admitted to the moment t through 1 second time of beginning of first memory 72 7For the past one secondary data is admitted to the moment t that first memory 72 stops 4Count, the elapsed time is l at interval 7, (=time after 1+3.1+1) second promptly 5.1.Yet, owing to the time of this experience is less than above-mentioned 11.7 seconds, at time interval l 7Interior first memory 72 possibilities do not become empty.In this example, as time interval l 7When being done, promptly at time l 8The time, 11.7 seconds replay data is admitted in the first memory 72.
Further, to be admitted to second memory 73 be from time t to data 9Beginning.In this case, because time t 9Be that in the past a secondary data is admitted to second memory 73 when stopping, i.e. time t 6Count and passed through time interval l 8, that is, and 37.1 (=time after 1+35.1+1) second, but the time of this experience be less than above-mentioned 58.9 seconds, at this time interval l 8Middle second memory 73 possibilities do not become empty.
In aforesaid method, from time t 5To time t 9Time interval l 9Operation proceed, therefore, might be under the state that sound does not have to interrupt from first record area territory 3 and second record area territory 6 replay data and keeping exporting them under the synchronous state.That is to say time interval l 9Be 40.2 (=3.1+35.1+1) second.
It should be noted that, more than describing is the CD of being reset as quilt at the example of the CD-R CD that comprises a plurality of posting fields in employing, and the data of CD-DA format standard are recorded in the first record area territory 3, and the data of CD-ROM format standard are recorded in the second record area territory 6, and the data of wherein utilizing the ATRAC compression algorithm go on record as the data of CD-ROM format standard.CD in other form as described below also can be applied.
Further, when data are set to 4 times to data during from speed that storer takes out from the speed of CD write store, the present invention is not limited to this example, can realize can adopting higher speed in the scope.In addition, when the capacity of storer was set to 16 megabits, the present invention also was not limited in such example in this case, but the storer of random capacity all can use.It should be noted that, if these numerical value change, certainly, each time interval l shown in Figure 16 1To l 9Length also will change.For example, if the capacity of employed storer becomes greatly, the length in each time interval can be provided with any the numerical value of growing up.
Other circuit part of the replay device of Figure 13 demonstration will be described below.
Servo circuit portion 77 flows to light pick-up part 70 to focus servo control signal, tracking servo control signal and translation (sled) servo-control signal according to aforesaid servo circuit control signal, this servo-control signal is carried from control section 76 and is come, thereby realizes the servocontrol of light picker 70.In addition, servo circuit part 77 flows to the rotation control that a main shaft (spindle) motor 78 is used for realizing spindle motor 78 rotating servo-control signal.
At first require the rotational speed of spindle motor 78 to be higher than the velocity of rotation of the spindle motor of common CD player.Be used for being taken into from 4 times of the speed of the memory of data of recording medium to the speed that reads replay data from storer in order to make replay data write, the velocity of rotation of spindle motor 78 is set to 4 times of velocities of rotation to the spindle motor of common CD player.In addition, spindle motor 78 also can rotate under higher speed.By allowing spindle motor 78 rotate with higher speed, can realize by above-mentioned playback method from the playback of the digitized audio message of CD-R CD 1 than the spindle motor among the common CD.
Playback output 79 comprises: composite part, digital simulation rot and note amplifier etc.More specifically, composite part according to from the playback control signal of control section 76 synthetic keep synchronous from first memory 72 digitized audio message and from the digitized audio message of second memory 73.Digital analog converter converts synthetic digitized audio message to simulated audio signal.Note amplifier amplifies this sound signal and it is outputed in the lead-out terminal 80.
The example that of first embodiment that will describe replay device used in the present invention below has been out of shape.
In this replay device, the digitized audio message that is recorded in the first record area territory 3 of the first session section 9 on the CD-R CD 1 is two passages, for example, and the digitized audio message of forward path; The digitized audio message that is recorded in the second record area territory 6 of the second session section 10 is two passages, for example, and corresponding to the digitized audio message of the back passage of the digitized audio message that is recorded in first record area territory 3.This replay device is suitable for from CD-R CD 1 playback digitized audio message.In addition, the digitized audio message that is recorded in second record area territory 6 is by for example digitized audio message of ATRAC compression algorithm.
In the replay device in the example that this has been out of shape, for example, as shown in Figure 17, light picker 70 is by the focus servo control signal from servo circuit part 77, and tracking servo control signal and translation servo-control signal provide the access to CD-R CD 1.Then, the data of CD-R CD 1 are read out by light picker 70.The gained data are transported in the RF circuit 131 as the RF signal, and through being transported to after waveform shaping and the binaryzation (binarization) in synchronous (sync) circuit 132 of CD signal Processing and time shaft.
The effect of CD signal Processing and time shaft synchronizing circuit 132 is to make when the management information that is recorded in first management area 2 and second management area 5 from the data of RF circuit 131 is transfused to wherein, and it is transported to these management information in the control section 76.In addition, the effect of CD signal Processing and time shaft synchronizing circuit 132 is when the program data (digitized audio message) that is recorded in first record area territory 3 and second record area territory 6 is transfused to wherein, it carries out the CD signal Processing, and promptly the EFM data of demodulation CD-DA form also are transported to the replay data of gained in the first memory 72.
On the other hand, the effect of CD signal Processing and time shaft synchronizing circuit 132 is when the data of CD-ROM form are transfused to wherein, the EFM data that it can demodulation CD-ROM form and the data delivery of gained in CD-ROM signal processing circuit 133.
In addition, CD signal Processing and time shaft synchronizing circuit 132 are read replay data and are exported it by forward path lead-out terminal 131 according to processing control signals and storer control signal from control section 76 from first memory 72.
First memory 72 has, for example, and the capacity of 16 megabits, and be used for storage temporarily corresponding to the replay data of the data that are recorded in first record area territory 3.
Then, CD-ROM signal processing circuit 133 passes through to use the error correction of the error correction code realization of CD-ROM form from the data of the CD-ROM form of CD signal Processing and time shaft synchronizing circuit 132, or detects address information, or the like.Then, CD-ROM signal processing circuit 133 is transported to the replay data of gained in the second memory 73 and through a memorizer control circuit 135 address information is transported in the control section 76.That is to say that the ROM (read-only memory) 134 that links to each other with CD-ROM signal processing circuit 133 has, for example, the capacity of 64K position, and be used for carrying out the error correction of address information and the data or the program of detection is stored among this ROM 134.Then, CD-ROM signal processing circuit 133 realizes error correction and address detected according to such data and program.
Memorizer control circuit 135 is the replay data from CD-ROM signal processing circuit 133, and promptly the replay data that obtains from second record area territory 6 is transported in the second memory 73.In addition, memorizer control circuit 135 reads out from the replay data of second memory 73 and it according to the storer control signal from control section 76 and is transported in the decompression decoding processing circuit 136.Second memory 73 has, and for example, is similar to 16 megabit capacity of first memory, is used for storage temporarily corresponding to the replay data of the data that are recorded in second record area territory 6.
The replay data that decompression decoding processing circuit 136 decoding is read from second memory 73 promptly, is compressed to original 1/5 data by using the ATRAC algorithm, and the replay data by backward channel lead-out terminal 138 output gained.
Control section 76 is according to carrying the management information of coming and replay data to produce the servo circuit control signal of an accessing operation that is used for controlling the light picker 70 relevant with CD-R CD 1 and this servo circuit control signal is transported to the servo circuit part 77 from CD signal Processing and time shaft synchronizing circuit 132, and produces one and be used for being controlled at the processing control signals of the data processing in CD signal Processing and time shaft synchronizing circuit 132 and the CD-ROM signal processing circuit 133 and it is transported in the CD-ROM signal processing circuit 133.In addition, control section 76 one of generation are used for taking out the storer control signal of replay data and through CD signal Processing and time shaft synchronizing circuit 132 it are transported in the CD-ROM signal processing circuit 133 from first memory 72, and the storer control signal that is used for obtaining replay data from second memory 73 is transported in the memorizer control circuit 135.Further, control section 76 according to the CD-ROM formatted data from CD-ROM signal processing circuit 133 produce one be used for being controlled at the decoding control signal of the decode operation in the decompression decoding processing circuit 136 and this signal conveys in decompression decoding processing circuit 136.
Servo circuit part 77 produces a focus servo control signal according to the servo circuit control signal from control section 76, and tracking servo control signal and a translation servo-control signal are with the accessing operation of the relevant light picker 70 of control and CD-R CD 1.In addition, servo circuit part 77 produce one rotate that servo-control signal is used for controlling the rotating operation of spindle motor 78 and this signal conveys in spindle motor 78.
As mentioned above, the velocity of rotation of spindle motor 78 is higher than the velocity of rotation of the spindle motor of common CD player, and for example rotates with 4 times speed of the velocity of rotation of the spindle motor of common CD player.
Further, in this replay device, be recorded in CD-R CD 1 that the digitized audio message of first record area territory 3 and backward channel is recorded in second record area territory 6 by under the situation of resetting at the digitized audio message of forward path, the data of each posting field are read by light picker 70.At this moment, processed in CD signal and time shaft synchronizing circuit 132 from the data in first record area territory 3, and temporarily be stored in the first memory 72.In addition, in CD signal Processing and time shaft synchronizing circuit 132, experience demodulation process process, and temporarily be stored in the second memory 73 by memorizer control circuit 135 corresponding to EFM from the data in second record area territory 6.
Control section 76 takes out the playback information of putting into first memory 72 and takes out the playback information of putting into second memory 73 in the mode of phase mutually synchronization according to the storer control signal, and, and in decompression decoding processing circuit 136, decode thereafter and export it by backward channel lead-out terminal 138 then from the replay data of second memory 73 by the replay data of forward path lead-out terminal 137 outputs from first memory 72.
The example of another distortion of first embodiment of replay device will be described below.
In this replay device, be recorded in digitized audio message in the first record area territory of the first session section 9 on the CD-R CD 1 and be with predetermined frequency sound signal of 88.2kHz sampling for example, then with a predetermined figure place for example 16 quantize it, thereby with a predetermined frequency for example 22kHz for example take a sample at the set of number audio-frequency information of the low frequency band edge of 0kHz～22kHz and the digitized audio message that obtains than the described predetermined sampling frequency sampling frequency that for example 44.1kHz is low with one thus with the digitized audio message of cutting apart after this quantification; The digitized audio message that is recorded in the second record area territory 6 of the second session section 10 is the digitized audio message that obtains with one group digitized audio message of for example high frequency band edge of ATRAC compression algorithm 22kHz～44kHz.This replay device is applicable to from CD-R CD 1 playback digitized audio message.
The structure of the replay device of the example after second distortion is presented among Figure 18.It should be noted that, in following description, represent with same numeral, and omit explanation them with each identical in Figure 17 replay device circuit part.
Output from light picker 70 is transported in CD information processing and the time shaft synchronizing circuit 132 through the RF circuit in mode recited above.In this example, the accessing operation of light picker 70 is to be controlled by the servo-control signal from servo circuit part 77.
CD signal Processing and 132 demodulation of time shaft synchronizing circuit are stored it in the first memory 72 into from the EFM data in first record area territory 3 and as the replay data of CD-DA format standard.In addition, CD signal Processing and 132 demodulation of time shaft synchronizing circuit are transported in the CD-ROM signal processing 133 from the EFM data in second record area territory 6 and it.Further, CD signal Processing and time shaft synchronizing circuit 132 are crossed in the sample circuit 140 according to obtaining replay data from the storer control signal of control section 76 and it is transported to one from first memory 72.In this example, the operation of CD signal Processing and time shaft synchronizing circuit 132 is by controlling from the processing control signals of control part 76.
Crossing sample circuit 140 will be described below.
As mentioned above, the digitized audio message that is recorded in first record area territory 3 is the part with the 0kHz～22kHz of the data of 88.2kHz sampling.On the contrary, the data of providing the CD-DA format standard for sample circuit 140 promptly are the data of 44.1kHz sampling with the sampling frequency.Therefore, crossing sample circuit 140 is with in the combiner circuit 141 for for example 88.2kHz crosses the data of sampling CD-DA format standard and the mistake sampled data of gained is transported to one with sampling frequency.
On the other hand, as mentioned above, error correction and address process that CD-ROM signal processing circuit 133 realizes the data that are recorded in second record area territory 6, and the replay data of gained is transported in the second memory 73 and address information is transported in the control section 76 through memorizer control circuit 135.In this example, the operation of CD-ROM signal processing circuit 133 is according to controlled from the processing control signals of control section 76.
Memorizer control circuit 135 allows second memory 73 to be stored in wherein from the replay data of CD-ROM signal processing circuit 133, and according to from second memory 73, reading replay data it is transported in the decompression decoding processing circuit 136 from the storer control signal of control section 76.
Because the replay data of reading from second memory 73 is through the ATRAC compression algorithm, decompression decoding processing circuit 136 these replay data of decoding with the data delivery of gained to being with in the combiner circuit 141.In this example, the data by the decoding processing gained are the parts at the 22kHz～44kHz of the digitized audio message of 88.2kHz frequency sample.In addition, decompression decoding processing circuit 136 is according to controlled from the decoding control signal of control section 76.
Band combiner circuit 141 is synthetic with the sampling frequency be the 88.2kHz sampling from cross that sample circuit 140 is carried the data of the 0kHz～22kHz frequency of coming and with the sampling frequency be the 88.2kHz sampling carry the data of the 22kHz～44kHz frequency of coming from decompression decoding processing circuit 136, with through the digitized audio message 0kHz～44kHz frequency range in of digitized audio message lead-out terminal 139 outputs with sampling frequency 88.2kHz sampling.In this example, because taking out operation and operate from the replay data taking-up of second memory 73 from the replay data of first memory 72 is controlled part 76 controls, because corresponding digitized audio message is to be imported into band combiner circuit 141 under the state that their timing corresponds to each other, thus there is no need to consider especially mutual synchronously.
Subsequently, the example after the 3rd of first embodiment of replay device of the present invention the distortion will be described below.
In this replay device, the digitized audio message that is recorded in the first record area territory 3 of the first session section 9 on the CD-R CD 1 is the high position of digitized audio message, as the digitized audio message on high 16, this digitized audio message is that and the digitized audio message that is recorded in the second record area territory 6 of the second session section 10 is 4 a digitized audio message of the low level of the digitized audio message after this quantification by for example sound signal of 44.1kHz sampling is then with a predetermined figure place 20 resulting digitized audio messages of sound signal that quantification is taken a sample for example with a predetermined sampling frequency.This replay device is applicable to the digitized audio message of playback from CD-R CD 1.
The structure of the replay device of the example after the 3rd distortion is presented among Figure 19.It should be noted that in following description, each circuit part identical with the replay device of Figure 17 represent with same numeral, and omit explanation them.
Output from light picker 70 is transported in CD signal Processing and the time shaft synchronizing circuit 132 by RF circuit 131.In this example, the accessing operation of light picker 70 is by controlling from servo circuit 77 servo-control signals.
CD signal Processing and 132 demodulation of time shaft synchronizing circuit allow first memory 72 store from the EFM data in first record area territory 3 and with its replay data as the CD-DA format standard.In addition, CD signal Processing and 132 demodulation of time shaft synchronizing circuit are transported in the CD-ROM signal processing 133 from the EFM data in second record area territory 6 and it.Further, CD signal Processing and time shaft synchronizing circuit 132 are transported to the data composite part 142 from first memory 72 taking-up replay data and it according to the storer control signal from control section 76.It should be noted that resulting in this example data are the data with 16 of the high positions of 20 digitized audio message of sampling frequency 44.1kHz sampling, and have only this part can be used as to reset output to be output.In addition, the operation of CD signal Processing and time shaft synchronizing circuit 132 is by controlling from the processing control signals of control part 76.
As mentioned above, CD-ROM signal processing circuit 133 carries out the error correction of the data that are recorded in second record area territory 6 and its address process are transported to the replay data of gained in the second memory with process memorizer control circuit 135, and address information is transported in the control section 76.In this case, the operation of CD-ROM signal processing circuit 133 is according to controlled from the processing control signals of control section 76.
Memorizer control circuit 135 allows second memory 73 to be stored in wherein from the replay data of CD-ROM signal processing circuit 133, and according to from second memory 73, reading replay data from the storer control signal of control section 76 and it being transported in the data composite part 142.In this case, be data from the data of memorizer control circuit 135 output with 4 of the low levels of 20 digitized audio message of sampling frequency 44.1kHz sampling.
Data composite part 142 synthetic from CD signal Processing and time shaft synchronizing circuit 132 high 16 data and from low 4 data of memorizer control circuit 135, with produce with the sampling frequency be the 44.1kHz sampling sound signal 20 digitized audio message and by 143 outputs of digitized audio message lead-out terminal it.In this example, take out operation and take out operation by control section 76 controls from the replay data of first memory 72 from the replay data of second memory 73.Therefore, the digitized audio message that corresponds to each other is to be output under the timing that corresponds to each other.In view of the above, there is no need to consider especially stationary problem between them.
Simultaneously, any of example after from first to the 3rd distortion, when the data of the CD-ROM form that is recorded in second record area territory 6 are got the data audio-frequency information of doing to comprise corresponding to the time code of the data in first record area territory 3, replay data (abreast) is simultaneously read from first memory 72 and second memory 73 and with reference to this time code they is synthesized together, and therefore makes the digitized audio message of playback high tone quality become possibility.
Second embodiment of replay device used in the present invention will be described below.
The replay device of second embodiment is meant a kind of replay device that is applicable to playback digitized audio message from CD-R CD 1, as shown in Figure 1, this CD-R CD 1 for example comprises: digitized audio message and address information are write down wherein first record area territory 3 in multiplexed mode; Record and be used for first management area 2 of information that the digitized audio message that is recorded in the first record area territory 3 is managed; Record corresponding to the digitized audio message in first record area territory 3 and the second record area territory 6 of address information with multiplex mode; Be used for second management area 2 of information that the digitized audio message that is recorded in the second record area territory 6 is managed with recording.This replay device comprises that also as shown in figure 20, for example, first pick-up 151 and first signal processing 153 are used for reading digitized audio message and address information from first record area territory 3; Second pick-up 152 and secondary signal processing section 154 are used for reading digitized audio message and address information from second record area territory 6; An internal storage 160 is used for storing the digitized audio message from secondary signal processing section 154; A control section 155 is used for according to controlling internal storage 160 and secondary signal processing section 154 from the address information in first record area territory 3 with from the address information in second record area territory 6; A mixing portion 162 is used for mixing digitized audio message of being reset by first pick-up 151 and the digitized audio message of being reset by second pick-up 152; With a D/A conversion portion 164, be used for the digitized audio message that is mixed by mixing portion 162 is converted to a simulated audio signal and exports it.
As mentioned above, described CD-R dish 1 is the CD of such many sessions section, and its first session section 9 is with the CD-DA format record, and the second session section 10 is with the CD-ROM format record.
In operation, the digitized audio message of first pick-up, 151 playback records in the first session section 9 also is transported to the replay signal of gained in first signal processing 153.In addition, first pick-up 151 provides access to CD-R CD 1 according to the stop signal of reading that will describe from the servo-control signal of control section 155 or back.
Further, the digitized audio message of second pick-up, 152 playback records in the second session section 10 also is transported to the replay signal of gained in the secondary signal processing section 154.In addition, second pick-up 152 is similar to first pick-up 151 according to from the servo-control signal of control section 155 or read stop signal access to CD-R CD 1 is provided.
First signal processing 153 from the replay signal binaryzation of first pick-up 151 with gained from the data delivery of first management area 2 in control section 155, and with by system's demodulation of CD-DA format specification from the data in first record area territory 3 16 digitized audio message of gained being transported in the mixing portion 162 via one 16 bit data path 156, thereby via an address date path 157 address date of digitized audio message is transported in the internal storage 160.
Secondary signal processing section 154 is differentiated the data of data decode from second record area territory 6 to the replay signal binaryzation from second pick-up 152 according to this then with the differentiation data of extracting expression CD-R CD 1 type (kind) from second management area 5.In addition, secondary signal processing section 154 via a CD-ROM formatted data path 158 the data delivery of the CD-ROM form of gained in internal storage 160, thereby via an address date path 159 address date of each data is transported in the internal storage 160.
Internal storage 160 is temporarily stored the data of the CD-ROM form that 154 conveyings are come from the secondary signal processing section as the storage data, and according to carry address information of coming and the address information that 154 conveyings are come from the secondary signal processing section from first signal processing 153, in mixing portion 162, its timing of taking is the timing synchronised that is output to mixing portion 162 in first signal processing 153 with the 16 bit digital audio-frequency informations that obtain the storage data delivery.
In addition, these storage data also are transported in the test section 161.Test section 161 estimate the storage data volume of internal storages 160 and the detection data delivery of gained in control section 155.
Control section 155 is according to being transported to each circuit part of the replay device of second example (embodiment) to a plurality of control signals from the replay signal of first signal processing 153 with from the detection data of test section 161, thereby makes the replay device of second example (embodiment) control the work of each circuit part according to the playback method of flowcharting shown in Figure 21.
Reference flowchart Figure 21, the operation of the replay device of second embodiment, promptly using playback method of the present invention will be explained as follows.
Use playback method of the present invention and be a kind of from the CD-R CD 1 playback method of audio playback information, this CD-R CD 1 comprises: the first record area territory 3 of writing down digitized audio message and address information with multiplex mode; Writing down and be used for first management area 2 of information that the digitized audio message that is recorded in first record area territory 3 is managed; Writing down corresponding to the second record area territory 6 of the digitized audio message in first record area territory 3 and address information and writing down with multiplex mode and be used for second management area 5 of information that the digitized audio message that is recorded in second record area territory 6 is managed.As shown in figure 21, this playback method comprises: step S107, read digitized audio message and address information with first pick-up 151 from first record area territory 3; Step S108 reads digitized audio message and address information with second pick-up 152 from second record area territory 6; Step S112, S114, according to the digitized audio message that in step S107, obtains and address information and digitized audio message that in step S108, obtains and address information, outputting digital audio information and keep therebetween synchronously; Step S110 differentiates and to be used for interim storage and whether to be equal to or greater than a predetermined value from the information storage of the internal storage 160 of the digitized audio message of second pick-up 152; Step S113 determines the information storage that is stored in memory portion at step S110 and is equal to or greater than under the situation of this predetermined value, carries out a control to allow second pick-up 152 be in waiting status; Step S115, whether the information storage of differentiating internal storage 160 is lower than this predetermined value; With step S116, determine the information storage that is stored in internal storage 160 at step S115 and be lower than under the situation of this predetermined value, carry out a control to restart second pick-up 152.
In this playback method, at step S100, the replay operations of CD-R CD 1 is activated.At step S101, control section 155 is transported to first pick-up 151 to servo-control signal so that allow it provide the access of first management area 2 and allow first pick-up 151 carry out the management information of resetting from second management area 2.Then, processing procedure enters step S102.
When step S102, in control section 155, determine the data P0 shown in its Fig. 5 and whether be present in the management information from first pick-up 151 (hereinafter being called first management information) for the information frame of " B0 ".That is to say whether determine by the playback CD is the CD of many sessions section.Differentiating the result is that CD that "No" is promptly reset is that processing procedure enters step S103 under the situation of CD of single session section.This replay device carries out the playback processing procedure of normal optical disk.
On the other hand, differentiating the result in step S102 is "Yes", promptly determines under the situation that the CD of being reset is many sessions section CD, and processing procedure enters step S104.Data P0 for whether the information frame of " E0 " is present in first management information is differentiated successively.Differentiating the result when this is "No", promptly determine the CD of being reset and be and have only character data to be recorded in second management area 5 of the second session section 10 and do not have data to be recorded under the situation of the CD in the second record area territory 6, processing procedure enters step S105.Therefore, replay device carries out the playback processing procedure of the CD of so-called tape character.
On the other hand, differentiating the result when step S104 is "Yes", promptly determines under the situation that the CD of being reset is the CD-R CD, and processing procedure enters step S106.Therefore, control section 155 is transported to servo-control signal in second pick-up 152 so that the address information that allows its basis be indicated by first management information provides the access to second management area 5.Therefore, the playback carried out second management area 5 of second pick-up 152.Then, processing procedure enters step S107.
When step S107, control section 155 is transported to a servo-control signal in first pick-up 151 so that the address information that allows its basis be indicated by first management information provides the access to first record area territory 3.Therefore, first pick-up, 151 playback of recorded are at the program in first record area territory 3.
In addition, at step S108, control section 155 is transported to a servo-control signal in second pick-up 152 so that the address information that allows its basis be represented by second management information provides the access to second record area territory 6.Therefore, the program of second pick-up, 152 playback of recorded in second record area territory 6.
When step S109, control section 155 is transported to the storer control signal in the internal storage 160.Therefore, the data of internal storage 160 storage playback second record area territories 6 gained.
In addition, when step S110, whether control section 155 bases reach a predetermined numerical value, i.e. memory space of Yun Xuing from the storage data volume of the detection discriminating data internal storage 160 of test section 161.Differentiating the result at this is "No", promptly still exists in internal storage 160 under the situation in enough vacant zones, and processing procedure enters step S111.
When step S111, whether the playback that determines second record area territory 6 is finished.Differentiating the result at this is "No", promptly plays under the situation about also not finishing, and processing procedure enters step S112.Therefore, control section 155 is transported to a such storer control signal in the internal storage 160, make to allow to keep mutually mutually synchronization to export the storage data, continue the replay operations of second pick-up 152 simultaneously by the address information of playback first record area territory 3 gained and address information by playback second record area territory 6 gained.Then, processing procedure is got back to step S109.
On the other hand, differentiating the result in step S111 is "Yes", promptly plays under the situation about having finished, and processing procedure enters step S117.Therefore, control section 155 is delivered in first pick-up 151 and second pick-up 152 to stop replay operations reading stop signal.Then, this replay device is finished whole replay operations.
In addition, differentiating the result when step S110 is "Yes", and the storage data volume that promptly determines internal storage 160 reaches the memory space of permission so that can not surpass this quantity and continues under the storage data conditions, and processing procedure enters step S113.Therefore, control section 155 is delivered in second pick-up 152 reading stop signal.Second pick-up 152 stops replay data and is in waiting status.
When step S114, be similar to step S112, control section 155 is transported to a such storer control signal in the internal storage 160, make by playback first record area territory 3 resulting address informations with by playback second record area territory 6 resulting address informations data of output storage under the state of mutually synchronization mutually.Then, processing procedure enters step S115.
When step S115, whether control section 155 is less than this predetermined numerical value according to differentiate the storage data volume from the detection data of test section 161.Differentiating the result at this is "No", promptly determines under the situation that can not guarantee enough area of space in internal storage 160, and processing procedure is got back to step S113.
On the other hand, differentiating the result in step S115 is "Yes", promptly determines data quantity stored and reaches predetermined numerical value make and guarantee to have under the situation of enough area of space that processing procedure enters step S116 in internal storage 160.Therefore, control section 155 is delivered to a control signal that it is restarted second pick-up 152 that is in waiting status.Then, processing procedure is got back to step S110.
It should be noted that the operation from step S109 to step S116 is carried out continuously after finishing playing.
Be session section CD more than so that be recorded in the digitized audio message in first record area territory 3 at CD-R CD 1 be that the digitized audio message of two passages and the digitized audio message that is recorded in second record area territory 6 are to be recorded in corresponding to this under situation of two channel digital audio information of digitized audio message in first record area territory 3, promptly, be recorded in the first session section 9 of CD-R CD 1 with the CD-DA form and the data of backward channel are recorded under the situation of the second session section 10 with the CD-ROM form with confined state in the data of forward path, the data P0 of its management information that Fig. 5 shows is " B0 ", two information frames of " E0 " are present in first management area 2, and the data P0 of its management information of showing of Fig. 5 is present in second management area 5 for the information frame of " D1 ".These information frames are as the differentiation data of differentiating multichannel CD.
Therefore, in the step S102 and step S104 of the process flow diagram of the playback method that Figure 21 represents, control section 155 detects information frame and the data P0 that its data P0 is " B0 " in from first management information of first pick-up 151 be the information frame of " E0 ", and in step S106, from being the information frame of " D1 " from detecting data P0 second management information of second pick-up 152.Then, control section 155 is used for one specifying the processing control signals of signal processing method to be transported to secondary signal processing section 154, with the information process of realizing being reset in the second record area territory 6 of the CD corresponding with hyperchannel, for example, realization is to the decompression process of the compressed data of playback.
So, 16 digitized audio message of first signal processing, 153 output forward paths, the data of secondary signal processing section 154 output backward channels.Therefore, the high tone quality digitized audio message of four-way is exported from digitized audio message lead-out terminal 165.
Further, at CD-R CD 1 is under a kind of like this situation that is applicable to the CD of handling the signal that figure place increased, promptly make its digitized audio message that is recorded in first record area territory 3 be experienced with after the predetermined sampling frequency sampling with the digitized audio message on the high position of the digitized audio message of a predetermined figure place quantification, and the digitized audio message that is recorded in second record area territory 6 is the digitized audio message on the low level of the digitized audio message after quantizing, promptly, the digitized audio message that is recorded in 4 of the first session section 9 of CD-R CD 1 and low levels at for example high-order 16 digitized audio message with the CD-DA form with the state usefulness CD-ROM format record of ATRACA compression algorithm as described above in the second session section 10, that is to say, record figure place and be increased to 20 digitized audio message, the data P0 of its management information so shown in Figure 5 is " B0 ", two information frames of " E0 " are present in first management area 2, and the data P0 of its management information shown in Figure 5 is present in second management area 5 for the information frame of " D2 ".These information frames are as the differentiation data of the CD that is suitable for handling the signal that figure place increased.
Therefore, in the step S102 and step S104 of the process flow diagram of the playback method that Figure 21 shows, control section 155 is from being the information frame of " E0 " from detecting information frame and the data P0 that its data P0 be " B0 " first management information of first pick-up 151, and in step S106, from being the information frame of " D2 " from detecting data P0 second management information of second pick-up 152.Then, control section 155 is being used for specifying the processing control signals of signal processing method to be transported to secondary signal processing section 154, be suitable for handling the signal processing in second record area territory 6 of the CD 2 of the data that figure place increased to realize being used for resetting, for example the packed data of resetting carried out the decompression process.
So 153 outputs of first signal processing are with the data of CD-DA format record, the data that its information of low four has obtained through decompression are exported in secondary signal processing section 154.Therefore, 20 high tone quality digitized audio message is exported from digitized audio message lead-out terminal 165.
In addition, at CD-R CD 1 is under a kind of like this situation of CD, make that promptly its digitized audio message that is recorded in first record area territory 3 is by to a predetermined sampling frequency, for example, 88.2kHz the sampling and with a predetermined figure place for example, the digitized audio message of 20 quantifications is with a predetermined frequency, for example, for being with, 1/4 the 22kHz of sampling frequency 8.2kHz cuts apart resulting digitized audio message, thereby realize digitized audio message is divided into the grouping of the digitized audio message of the digitized audio message of high frequency band edge and low frequency band edge, with the sampling frequency that is lower than 88.2kHz with, the 44.1kHz digitized audio message of low frequency band edge of taking a sample for example is just to the sampling that descends of resulting digitized audio message; And the digitized audio message that is recorded in second record area territory 6 is the digitized audio message that is suitable for handling so-called high sampled data (with the data of high sampling frequency sampling), this digitized audio message is the digitized audio message by compression high frequency band edge, for example obtain by aforesaid ATRAC algorithm, that is to say, for example, be that (data of 0kHz～22kHz) are recorded in the first session section 9 of CD-R CD 1 after through the sampling that descends for the low frequency band edge of the signal of 88.2kHz sampling with the sampling frequency, and the high frequency band edge (data of 22kHz～44kHz) are recorded under the situation in the second session section 10 with the CD-ROM form with the state of compression, there is the data P0 of its management information shown in Figure 5 to be " B0 " so, two information frames of " E0 " are present in first management area 2 and the data P0 of its management information shown in Figure 5 is present in second management area 5 for the information frame of " D3 ".These differentiate frame as the differentiation data corresponding to multichannel CD.
Therefore, in the step S102 and step S104 of the process flow diagram of the represented playback method of Figure 21, control section 155 is from being the information frame of " E0 " from detecting information frame and the data P0 that its data P0 be " B0 " first management information of first pick-up 151; And in step S106, control section 155 is from being the information frame of " D3 " from detecting its data P0 second management information of second pick-up 152.Then, control section 155 is being used for specifying the processing control signals of signal processing method to be transported in the secondary signal processing section 154, be suitable for handling the signal processing in the second record area territory 6 of the CD that figure place increased to be used for resetting, for example, packed data is carried out the decompression process.
So 153 outputs of first signal processing are by the data of CD-DA format record, the digitized audio message that secondary signal processing section 154 was compressed is also exported it.Therefore, be that 20 the high tone quality digitized audio message that 88.1kHz takes a sample is exported from digitized audio message lead-out terminal 165 with the sampling frequency.
It should be noted that, more than adopt the CD-R CD that on same surface, comprises a plurality of zones, be used for pen recorder at this CD-R CD identifying recording layer, be used as recording medium of the present invention be used for the resetting playback method of this CD and the example of replay device, but the present invention is not limited to this embodiment.For example, the present invention can be applied to as on the multimedia dish of recording medium that comprises sandwich construction, for example be that a kind of data the CD-DA form are recorded on the ground floor and the data of CD-ROM form are recorded in a multimedia CD on the second layer, with be used for this multimedia CD pen recorder, playback method and replay device.
As noted earlier, according to recording medium of the present invention, data can be recorded respectively in the first session section 9 and the second session section 10 with different forms.Further, digitized audio message with the CD-DA format record is recorded in the first session section 9, the digitized audio message that links to each other with the digitized audio message that is recorded in the first session section 9 is recorded in the second session section 10, therefore might make a kind of recording medium, make voice data under the state of high tone quality, go on record and keep compatible with common CD player.
In addition, this recording medium is so a kind of recording medium, make that the digitized audio message of four-way is that per two passages are recorded in each session section, its mode is that digitized audio message is recorded in the first session section with the CD-DA form at least, therefore, might make a recording medium, be used for making voice data to go on record and keep compatible with common CD player with the state of high tone quality.
Further, recording medium is a kind of like this recording medium, make greater than 16 digitized audio message up to this part of 16 with the CD-DA format record in the first session section 9, the digitized audio message of all the other is recorded in the second session section 10 with the CD-ROM form.Therefore, a kind of being applicable to got off voice data and kept compatible recording medium can be manufactured to come out with common CD player with the high tone quality state recording.
Further, recording medium should be a kind of like this recording medium, a predetermined frequency for example make with the digitized audio message of taking a sample by the sampling frequency of common CD-DA format specification (appointments), for being cut apart by band at 1/2nd frequency place of sampling frequency, make the digitized audio message that is grouped into the high frequency band edge and the digitized audio message of low frequency band edge, thereby descend the digitized audio message of sampling low frequency band edge and it is recorded in the first session section 9, the digitized audio message of high frequency band edge is recorded in the second session section 10 with the CD-ROM form with the CD-DA form.Therefore, be applicable to voice data got off with the state recording of high tone quality and can be manufactured to come out with the compatible mutually recording medium of common CD player.
Further, according to pen recorder of the present invention, data can be recorded respectively with different forms corresponding in the first session section 9 and the second session section 10.Further, be recorded in the first session section 9 with the digitized audio message of CD-DA format record, the digitized audio message that is connected with the digitized audio message that is recorded in the first session section 9 is recorded in the second session section 10.Therefore, be applicable to voice data got off with the high tone quality state recording and to play the organizational security of holding concurrently with common CD and hold compatible recording medium and may be manufactured come out.
Further, according to playback method of the present invention, carry out like this corresponding to the playback that the digitized audio message of the digitized audio message that is recorded in first record area territory 3 is recorded to this recording medium in the second record area territory 6 for making digitized audio message be recorded in first record area territory 3 neutralization, that is, by reading and each digitized audio message that corresponds to each other of the record of resetting in first and second posting fields 3 and 6 and synchronously export them.Therefore, can under the condition of not damaging tonequality, realize playback, on this recording medium, write down the digitized audio message of high tone quality state the digitized audio message of recording medium.
Further, at described playback method, be recorded in the first record area territory 3 at the digitized audio message that adopts two passages, and be recorded in corresponding to the two channel digital audio information that are recorded in the digitized audio message in the first record area territory 3 under the situation of recording medium in second record area territory 6, the digitized audio message that is recorded in the digitized audio message in first record area territory 3 and is recorded in second record area territory 6 is read respectively and is reset, and exports in the mode of phase mutually synchronization.Therefore, can realize the playback of multichannel high tone quality digitized audio message.
Further, in described playback method, in employed recording medium, this part up to 16 greater than 16 digitized audio messages is recorded in the first record area territory 3, and the digitized audio message of remainder is recorded under the situation in the second record area territory 6, and the digitized audio message that is recorded in first record area territory 3 and the digitized audio message that is recorded in second record area territory 6 are read respectively and reset out and export them in the mode of mutually synchronization mutually.Therefore, can realize the playback of the high tone quality digitized audio message that figure place has increased.
Further, in described playback method, in employed recording medium, at sampling frequency sampling digitized audio message by common CD-DA format specification, and at a predetermined frequency place, for example, this frequency can be half of sampling frequency, be with and cut apart the resulting digitized audio message of sampling, thereby be the descend digitized audio message of sampling low frequency band edge of half frequency of sampling frequency with respect to this, the information of last gained is recorded in the first record area territory 3, and, the information of the digitized audio message gained by compression high frequency band edge is recorded in the second record area territory 6, in this case, use a kind of method and reset from the digitized audio message in first record area territory 3, and through playback after the decompression from the packed data in second record area territory 6 and with the mode of phase mutually synchronization outputting digital audio information accordingly mutually.Therefore, can realize the playback of the high tone quality digitized audio message of so-called high sampling system (with the high sampling frequency sampling).
Further, according to replay device of the present invention, be recorded in the digitized audio message in first and second posting fields 3 and 6 and export each corresponding mutually digitized audio message by using single playback device to read in the mode of mutually synchronization mutually with resetting out, realized the playback to a recording medium, digitized audio message is recorded in the first record area territory 3 and is recorded in the second record area territory 6 corresponding to the digitized audio message of the digitized audio message that is recorded in first record area territory 3 on this recording medium.Therefore, might under the condition of not damaging tonequality, realize from the recording medium of the digitized audio message that writing down high tone quality, duplicating digitized audio message.
Further, in described replay device, in employed recording medium, the digitized audio message of two passages is recorded in the first record area territory 3, two channel digital audio information corresponding to the digitized audio message that is recorded in first record area territory 3 are recorded in the second record area territory 6, in this case, the digitized audio message that is recorded in the digitized audio message in first record area territory 3 and is recorded in second record area territory 6 is read out with the playback device and resets out, and allows control device produce one to control so that export the digitized audio message of mutual correspondence in the mode of phase mutually synchronization.Therefore, can realize the playback of multichannel high tone quality digitized audio message.
Further, in described replay device, in employed recording medium, this a part of digitized audio message up to 16 greater than 16 digitized audio messages is recorded in the first record area territory 3, all the other everybody digitized audio messages are recorded in the second record area territory 6, in this case, the digitized audio message that is recorded in the digitized audio message in first record area territory 3 and is recorded in second record area territory 6 is read out with the playback device and resets out, and allows control device produce one to control so that export the corresponding digital audio-frequency information in the mode of phase mutually synchronization.Therefore, can realize the playback of the high tone quality digitized audio message that figure place has increased.
Further, in described replay device, in employed recording medium, with a sampling frequency sampling digitized audio message by common CD-DA format specification, and at a predetermined frequency place, the digitized audio message of for example cutting apart the gained of taking a sample at half the frequency place band that is sampling frequency, to with respect to half frequency of this sampling frequency in the sampling that descends of the digitized audio message of low frequency band edge, the information of last gained is recorded in the first record area territory 3, simultaneously, the information of the digitized audio message gained of compression high frequency band edge is recorded in the second record area territory 6, in this case, the playback device is used to read and resets out and is recorded in digitized audio message in the first record area territory 3, thereby the digitized audio message that the digitized audio message of reading compression simultaneously from second record area territory 6 is read like this to decompress is reset it, and control device is used to carry out a control so that export the digitized audio message of mutual correspondence in the mode of phase mutually synchronization.Therefore, can realize the playback of the high tone quality digitized audio message of so-called high sampling (with the sampling of high frequency sampling frequency).
Further, according to replay device of the present invention, by using two playback devices, taking-up is recorded in first and second posting fields 3 and 6 digitized audio message and uses hybrid device to export each corresponding mutually digitized audio message in the mode of mutually synchronization mutually, realization is to the playback of a recording medium, on this recording medium, digitized audio message is recorded in 3 neutralizations of first record area territory and is recorded in the second record area territory 6 corresponding to the digitized audio message that is recorded in the digitized audio message in the first record area territory 3.Therefore, might under the condition of not damaging tonequality, realize the digitized audio message of from the recording medium of the digitized audio message that writing down high tone quality, resetting.
Further, in described replay device, in employed recording medium, the digitized audio message of two passages is recorded in the first record area territory 3, digitized audio message corresponding to two passages of the digitized audio message that is recorded in first record area territory 3 is recorded in the second record area territory 6, in this case, the first playback device is used to read and resets out and is recorded in digitized audio message in the first record area territory 3, the second playback device is used to read and resets out and is recorded in digitized audio message in the second record area territory 6, and hybrid device is used to export digitized audio message from the mutual correspondence of the first and second playback devices in the mode of phase mutually synchronization, therefore, can realize the playback of multichannel high tone quality digitized audio message.
Further, in described replay device, in employed recording medium, this a part of digitized audio message up to 16 greater than 16 digitized audio messages is recorded in the first record area territory 3, the digitized audio message of remainder is recorded in the second record area territory 6, in this case, being recorded in digitized audio message in the first record area territory 3 is read out by the first playback device and resets out, be recorded in digitized audio message in the second record area territory 6 and be read out by the second playback device and reset out, corresponding mutually digitized audio message is output by the mode of hybrid device with the phase mutually synchronization.Therefore, can realize the playback of the high tone quality digitized audio message that figure place has increased.
In addition, in described replay device, in employed recording medium, at sampling frequency sampling digitized audio message by common CD-DA format specification (appointment), and, for example, cut apart the digitized audio message of the gained of taking a sample for half frequency place band of sampling frequency at a predetermined frequency place, descend then sampling with respect to this be half frequency of sampling frequency at the digitized audio message of low frequency band edge, the information of gained is at last recorded in the first record area territory 3; Handle records in the second record area territory 6 by the digitized audio message of the digitized audio message gained of compression high frequency band edge simultaneously, in this case, being recorded in digitized audio message in the first record area territory 3 is read out by the first playback device and resets out, compressed digitized audio message read from second record area territory 6 by the second playback device and the digitized audio message read of decompressing exporting it, and export in the mode of phase mutually synchronization by hybrid device from the digitized audio message of the mutual correspondence of the first and second playback devices.Therefore, can realize the playback of the high tone quality digitized audio message of so-called high sampling system (with the high sampling frequency sampling).

Claims (12)

1. recording method at the recording medium identifying recording layer, wherein, record is with the digital audio and video signals that also quantizes with a predetermined figure place (X+Y) of a predetermined sampling frequency sampling on recording medium, and this recording method comprises step:
The digital audio and video signals that quantizes in the first record area territory of recording medium record X position that take a sample with this predetermined sampling frequency and that use (X+Y) position;
Write down first management data with the digital audio and video signals of management accounts in first management area of recording medium in the first record area territory;
At the digital audio and video signals that the second record area territory of recording medium record quantizes with Y position this predetermined sampling frequency sampling and that use (X+Y) position, wherein said first and second posting fields are the radial zones that separate; And
Write down second management data in second management area of recording medium with the data sound signal of management accounts in the second record area territory.
2. recording method as claimed in claim 1, the digital audio and video signals that wherein is recorded in the first record area territory is the digital audio and video signals of two passages, and
The digital audio and video signals that wherein is recorded in the second record area territory is the two channel digital audio signals corresponding with the digital audio and video signals of two passages that are recorded in the first record area territory.
3. recording method as claimed in claim 1, the digital audio and video signals that wherein is recorded in the second record area territory is the signal that compressed.
4. recording method as claimed in claim 1, wherein the time code corresponding to the first record area territory is recorded in the second record area territory.
5. recording method as claimed in claim 1, wherein
Wherein, at the digital audio and video signals with a high position this predetermined sampling frequency sampling and that with the digital audio and video signals that the X position of predetermined (X+Y) position quantizes be the digital audio and video signals that quantized of first record area territory record; And
Wherein at the digital audio and video signals with low level this predetermined sampling frequency sampling and that with the digital audio and video signals that the Y position of predetermined (X+Y) position quantizes be the digital audio and video signals that quantized of second record area territory record.
6. recording method as claimed in claim 1, wherein
Wherein, first record area territory record digital audio and video signals be with preset frequency to by this predetermined sampling frequency sampling and carry out the digitized audio message that frequency division obtains with the digitized audio message of the quantification of predetermined (X+Y), thereby realize the grouping of the digitized audio message of high frequency band edge and low frequency band edge, so that the set of number audio-frequency information is taken a sample with the sampling frequency lower than predetermined sampling frequency, and
Wherein the digital audio and video signals at second record area territory record is the digitized audio message that obtains by the digitized audio message that compresses another group.
7. recording method as claimed in claim 1, wherein
Wherein the X position is 16, and the Y position is 4.
8. recording method as claimed in claim 1, wherein
Wherein the X position of (X+Y) position has different values with the Y position of (X+Y) position.
9. recording method as claimed in claim 1, wherein
Wherein the X position is 16, and the Y position is the predetermined figure place (X+Y) greater than 16.
10. recording method at the recording medium identifying recording layer, wherein on recording medium, write down the multi-channel digital sound signal, each passage of described digital audio and video signals is taken a sample with a predetermined sampling frequency and is quantized with a predetermined figure place, and this recording method comprises step:
The first record area territory of recording medium record with this predetermined sampling frequency sampling, and with a passage of the digital audio and video signals of this predetermined figure place quantification;
Write down first management data with the digital audio and video signals of management accounts in first management area of recording medium in the first record area territory;
The second record area territory of recording medium record with this predetermined sampling frequency sampling, and with another passage of the digital audio and video signals of this predetermined figure place quantification; And
Write down second management data with the digital audio and video signals of management accounts in second management area of recording medium in the second record area territory;
Wherein be recorded in digital audio and video signals in the first record area territory and be by cutting apart a high position that the digital audio and video signals that quantizes with described predetermined figure place obtains and a part in two data parts of low level; And
Wherein be recorded in digital audio and video signals in the second record area territory and be another part of the data division of the digital audio and video signals that quantizes with described predetermined figure place.
11. recording method at the recording medium identifying recording layer, wherein, on recording medium record with a predetermined sampling frequency sampling and with predetermined figure place digital audio and video signals quantification and that be divided into two frequency bands, this recording method comprises step:
The first record area territory of recording medium record with this predetermined sampling frequency sampling and with this predetermined figure place digital audio and video signals quantification and that be divided into a frequency band;
Write down first management data with the digital audio and video signals of management accounts in first management area of recording medium in the first record area territory;
The second record area territory of recording medium record with this predetermined sampling frequency sampling, and with this predetermined figure place digital audio and video signals that quantize and that be divided into another frequency band, wherein first and second posting fields are radial zones of separation; And
Write down second management data with the digital audio and video signals of management accounts in second management area of recording medium in the second record area territory.
12. recording method as claimed in claim 11,
Wherein, be that the sampling that descends obtains to the digital audio and video signals that carries out a frequency band in two frequency bands that band segmentation was obtained by the digital audio and video signals with predetermined sampling frequency sampling at the digital audio and video signals of first record area territory record;
Wherein, the digital audio and video signals at second record area territory record is the digital audio and video signals that carries out another frequency band that band segmentation was obtained by the digital audio and video signals with predetermined sampling frequency sampling.
CNB031474829A 1995-05-31 1996-05-31 Recording medium Expired - Fee Related CN1310246C (en)

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US5926448A (en) 1999-07-20
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US6130870A (en) 2000-10-10
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AU709193B2 (en) 1999-08-26
JP3876444B2 (en) 2007-01-31

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